TY  - JOUR
AU  - Đurđić, Slađana Z.
AU  - Stanković, Vesna
AU  - Vlahović, Filip
AU  - Ognjanović, Miloš
AU  - Kalcher, Kurt
AU  - Manojlović, Dragan D.
AU  - Mutić, Jelena
AU  - Stanković, Dalibor
PY  - 2021
UR  - https://www.sciencedirect.com/science/article/pii/S0026265X21005002
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/4543
AB  - L-DOPA (L-3,4-dihydroxyphenylalanine), the precursor of dopamine, is widely used in the treatment of Parkinson’s disease, thus determining and monitoring the concentration of L-DOPA is of utmost importance for both medical and scientific purposes. Although many analytical approaches, designed for drug detection and quantification, already exist, there is a constant need for modification of old and tailoring of new, faster, and selective methods. Redox active chemical species, such as L-DOPA, can be measured directly by electrochemical means, whereas electrochemical sensors combine sensitivity and selectivity within a small analytical device. This work demonstrates the development of such electrochemical sensor, based on carboxylated single-wall carbon nanotubes (SWCNT-COOH) decorated with SiO2 coated-Nd2O3 nanoparticles, and further application for the detection of L-DOPA. Developed SWCNT-COOH@Nd2O3-SiO2 sensor shows linear response in the range from 2 µmol L−1 to 52 µmol L−1 analyte concentration, and beside the low detection limit, it is characterized by a fast response time, as well as good life-time, reproducibility and repeatability.
T2  - Microchemical Journal
T1  - Carboxylated single-wall carbon nanotubes decorated with SiO2 coated-Nd2O3 nanoparticles as an electrochemical sensor for L-DOPA detection
VL  - 168
SP  - 106416
DO  - 10.1016/j.microc.2021.106416
ER  - 

@article{
author = "Đurđić, Slađana Z. and Stanković, Vesna and Vlahović, Filip and Ognjanović, Miloš and Kalcher, Kurt and Manojlović, Dragan D. and Mutić, Jelena and Stanković, Dalibor",
year = "2021",
abstract = "L-DOPA (L-3,4-dihydroxyphenylalanine), the precursor of dopamine, is widely used in the treatment of Parkinson’s disease, thus determining and monitoring the concentration of L-DOPA is of utmost importance for both medical and scientific purposes. Although many analytical approaches, designed for drug detection and quantification, already exist, there is a constant need for modification of old and tailoring of new, faster, and selective methods. Redox active chemical species, such as L-DOPA, can be measured directly by electrochemical means, whereas electrochemical sensors combine sensitivity and selectivity within a small analytical device. This work demonstrates the development of such electrochemical sensor, based on carboxylated single-wall carbon nanotubes (SWCNT-COOH) decorated with SiO2 coated-Nd2O3 nanoparticles, and further application for the detection of L-DOPA. Developed SWCNT-COOH@Nd2O3-SiO2 sensor shows linear response in the range from 2 µmol L−1 to 52 µmol L−1 analyte concentration, and beside the low detection limit, it is characterized by a fast response time, as well as good life-time, reproducibility and repeatability.",
journal = "Microchemical Journal",
title = "Carboxylated single-wall carbon nanotubes decorated with SiO2 coated-Nd2O3 nanoparticles as an electrochemical sensor for L-DOPA detection",
volume = "168",
pages = "106416",
doi = "10.1016/j.microc.2021.106416"
}

Đurđić, S. Z., Stanković, V., Vlahović, F., Ognjanović, M., Kalcher, K., Manojlović, D. D., Mutić, J.,& Stanković, D.. (2021). Carboxylated single-wall carbon nanotubes decorated with SiO2 coated-Nd2O3 nanoparticles as an electrochemical sensor for L-DOPA detection. in Microchemical Journal, 168, 106416.
https://doi.org/10.1016/j.microc.2021.106416

Đurđić SZ, Stanković V, Vlahović F, Ognjanović M, Kalcher K, Manojlović DD, Mutić J, Stanković D. Carboxylated single-wall carbon nanotubes decorated with SiO2 coated-Nd2O3 nanoparticles as an electrochemical sensor for L-DOPA detection. in Microchemical Journal. 2021;168:106416.
doi:10.1016/j.microc.2021.106416 .

Đurđić, Slađana Z., Stanković, Vesna, Vlahović, Filip, Ognjanović, Miloš, Kalcher, Kurt, Manojlović, Dragan D., Mutić, Jelena, Stanković, Dalibor, "Carboxylated single-wall carbon nanotubes decorated with SiO2 coated-Nd2O3 nanoparticles as an electrochemical sensor for L-DOPA detection" in Microchemical Journal, 168 (2021):106416,
https://doi.org/10.1016/j.microc.2021.106416 . .

TY  - DATA
AU  - Đurđić, Slađana Z.
AU  - Stanković, Vesna
AU  - Vlahović, Filip
AU  - Ognjanović, Miloš
AU  - Kalcher, Kurt
AU  - Manojlović, Dragan D.
AU  - Mutić, Jelena
AU  - Stanković, Dalibor
PY  - 2021
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/4544
T2  - Microchemical Journal
T1  - Supplementary data for the article: Đurđić, S.; Stanković, V.; Vlahović, F.; Ognjanović, M.; Kalcher, K.; Manojlović, D.; Mutić, J.; Stanković, D. M. Carboxylated Single-Wall Carbon Nanotubes Decorated with SiO2 Coated-Nd2O3 Nanoparticles as an Electrochemical Sensor for L-DOPA Detection. Microchemical Journal 2021, 168, 106416. https://doi.org/10.1016/j.microc.2021.106416.
UR  - https://hdl.handle.net/21.15107/rcub_cherry_4544
ER  - 

@misc{
author = "Đurđić, Slađana Z. and Stanković, Vesna and Vlahović, Filip and Ognjanović, Miloš and Kalcher, Kurt and Manojlović, Dragan D. and Mutić, Jelena and Stanković, Dalibor",
year = "2021",
journal = "Microchemical Journal",
title = "Supplementary data for the article: Đurđić, S.; Stanković, V.; Vlahović, F.; Ognjanović, M.; Kalcher, K.; Manojlović, D.; Mutić, J.; Stanković, D. M. Carboxylated Single-Wall Carbon Nanotubes Decorated with SiO2 Coated-Nd2O3 Nanoparticles as an Electrochemical Sensor for L-DOPA Detection. Microchemical Journal 2021, 168, 106416. https://doi.org/10.1016/j.microc.2021.106416.",
url = "https://hdl.handle.net/21.15107/rcub_cherry_4544"
}

Đurđić, S. Z., Stanković, V., Vlahović, F., Ognjanović, M., Kalcher, K., Manojlović, D. D., Mutić, J.,& Stanković, D.. (2021). Supplementary data for the article: Đurđić, S.; Stanković, V.; Vlahović, F.; Ognjanović, M.; Kalcher, K.; Manojlović, D.; Mutić, J.; Stanković, D. M. Carboxylated Single-Wall Carbon Nanotubes Decorated with SiO2 Coated-Nd2O3 Nanoparticles as an Electrochemical Sensor for L-DOPA Detection. Microchemical Journal 2021, 168, 106416. https://doi.org/10.1016/j.microc.2021.106416.. in Microchemical Journal.
https://hdl.handle.net/21.15107/rcub_cherry_4544

Đurđić SZ, Stanković V, Vlahović F, Ognjanović M, Kalcher K, Manojlović DD, Mutić J, Stanković D. Supplementary data for the article: Đurđić, S.; Stanković, V.; Vlahović, F.; Ognjanović, M.; Kalcher, K.; Manojlović, D.; Mutić, J.; Stanković, D. M. Carboxylated Single-Wall Carbon Nanotubes Decorated with SiO2 Coated-Nd2O3 Nanoparticles as an Electrochemical Sensor for L-DOPA Detection. Microchemical Journal 2021, 168, 106416. https://doi.org/10.1016/j.microc.2021.106416.. in Microchemical Journal. 2021;.
https://hdl.handle.net/21.15107/rcub_cherry_4544 .

Đurđić, Slađana Z., Stanković, Vesna, Vlahović, Filip, Ognjanović, Miloš, Kalcher, Kurt, Manojlović, Dragan D., Mutić, Jelena, Stanković, Dalibor, "Supplementary data for the article: Đurđić, S.; Stanković, V.; Vlahović, F.; Ognjanović, M.; Kalcher, K.; Manojlović, D.; Mutić, J.; Stanković, D. M. Carboxylated Single-Wall Carbon Nanotubes Decorated with SiO2 Coated-Nd2O3 Nanoparticles as an Electrochemical Sensor for L-DOPA Detection. Microchemical Journal 2021, 168, 106416. https://doi.org/10.1016/j.microc.2021.106416." in Microchemical Journal (2021),
https://hdl.handle.net/21.15107/rcub_cherry_4544 .

TY  - JOUR
AU  - Stanković, Vesna
AU  - Đurđić, Slađana Z.
AU  - Ognjanović, Miloš
AU  - Antić, Bratislav
AU  - Kalcher, Kurt
AU  - Mutić, Jelena
AU  - Stanković, Dalibor
PY  - 2020
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/3881
AB  - Diagnosis and treatment of some important diseased and metabolic disorders is based on successful detection of albumin. In this work, we aim to develop a simple immunosensor for the detection of human serum albumin in biological fluids. Anti-human albumin antibody was covalently attached to the activated surface of screen-printed carbon electrodes enriched with carboxyl graphene/gold nanoparticles composite. Microstructure (TEM, FE-SEM, XRD) and electrochemical (CV, EIS) characterization methods were used to investigate composite properties and to confirm the successful modification of the electrodes. Under the optimal conditions, linear working range and limit of detection were 2.5–500 μg/mL and 1.55 μg/mL, respectively. Additionally, the effect of some possibly interfering compounds was investigated and the immunosensor was used for real sample analysis. The results showed that the sensor exhibited accurate, precise and sensitive characteristics and can be promising replacement to the convention methods for albumin detection in clinical practice.
PB  - Elsevier
T2  - Journal of Electroanalytical Chemistry
T1  - Anti-human albumin monoclonal antibody immobilized on EDC-NHS functionalized carboxylic graphene/AuNPs composite as promising electrochemical HSA immunosensor
VL  - 860
DO  - 10.1016/j.jelechem.2020.113928
ER  - 

@article{
author = "Stanković, Vesna and Đurđić, Slađana Z. and Ognjanović, Miloš and Antić, Bratislav and Kalcher, Kurt and Mutić, Jelena and Stanković, Dalibor",
year = "2020",
abstract = "Diagnosis and treatment of some important diseased and metabolic disorders is based on successful detection of albumin. In this work, we aim to develop a simple immunosensor for the detection of human serum albumin in biological fluids. Anti-human albumin antibody was covalently attached to the activated surface of screen-printed carbon electrodes enriched with carboxyl graphene/gold nanoparticles composite. Microstructure (TEM, FE-SEM, XRD) and electrochemical (CV, EIS) characterization methods were used to investigate composite properties and to confirm the successful modification of the electrodes. Under the optimal conditions, linear working range and limit of detection were 2.5–500 μg/mL and 1.55 μg/mL, respectively. Additionally, the effect of some possibly interfering compounds was investigated and the immunosensor was used for real sample analysis. The results showed that the sensor exhibited accurate, precise and sensitive characteristics and can be promising replacement to the convention methods for albumin detection in clinical practice.",
publisher = "Elsevier",
journal = "Journal of Electroanalytical Chemistry",
title = "Anti-human albumin monoclonal antibody immobilized on EDC-NHS functionalized carboxylic graphene/AuNPs composite as promising electrochemical HSA immunosensor",
volume = "860",
doi = "10.1016/j.jelechem.2020.113928"
}

Stanković, V., Đurđić, S. Z., Ognjanović, M., Antić, B., Kalcher, K., Mutić, J.,& Stanković, D.. (2020). Anti-human albumin monoclonal antibody immobilized on EDC-NHS functionalized carboxylic graphene/AuNPs composite as promising electrochemical HSA immunosensor. in Journal of Electroanalytical Chemistry
Elsevier., 860.
https://doi.org/10.1016/j.jelechem.2020.113928

Stanković V, Đurđić SZ, Ognjanović M, Antić B, Kalcher K, Mutić J, Stanković D. Anti-human albumin monoclonal antibody immobilized on EDC-NHS functionalized carboxylic graphene/AuNPs composite as promising electrochemical HSA immunosensor. in Journal of Electroanalytical Chemistry. 2020;860.
doi:10.1016/j.jelechem.2020.113928 .

Stanković, Vesna, Đurđić, Slađana Z., Ognjanović, Miloš, Antić, Bratislav, Kalcher, Kurt, Mutić, Jelena, Stanković, Dalibor, "Anti-human albumin monoclonal antibody immobilized on EDC-NHS functionalized carboxylic graphene/AuNPs composite as promising electrochemical HSA immunosensor" in Journal of Electroanalytical Chemistry, 860 (2020),
https://doi.org/10.1016/j.jelechem.2020.113928 . .

TY  - JOUR
AU  - Stanković, Vesna
AU  - Đurđić, Slađana Z.
AU  - Ognjanović, Miloš
AU  - Antić, Bratislav
AU  - Kalcher, Kurt
AU  - Mutić, Jelena
AU  - Stanković, Dalibor
PY  - 2020
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/3891
AB  - Diagnosis and treatment of some important diseased and metabolic disorders is based on successful detection of albumin. In this work, we aim to develop a simple immunosensor for the detection of human serum albumin in biological fluids. Anti-human albumin antibody was covalently attached to the activated surface of screen-printed carbon electrodes enriched with carboxyl graphene/gold nanoparticles composite. Microstructure (TEM, FE-SEM, XRD) and electrochemical (CV, EIS) characterization methods were used to investigate composite properties and to confirm the successful modification of the electrodes. Under the optimal conditions, linear working range and limit of detection were 2.5–500 μg/mL and 1.55 μg/mL, respectively. Additionally, the effect of some possibly interfering compounds was investigated and the immunosensor was used for real sample analysis. The results showed that the sensor exhibited accurate, precise and sensitive characteristics and can be promising replacement to the convention methods for albumin detection in clinical practice.
PB  - Elsevier
T2  - Journal of Electroanalytical Chemistry
T1  - Anti-human albumin monoclonal antibody immobilized on EDC-NHS functionalized carboxylic graphene/AuNPs composite as promising electrochemical HSA immunosensor
VL  - 860
SP  - 113928
DO  - 10.1016/j.jelechem.2020.113928
ER  - 

@article{
author = "Stanković, Vesna and Đurđić, Slađana Z. and Ognjanović, Miloš and Antić, Bratislav and Kalcher, Kurt and Mutić, Jelena and Stanković, Dalibor",
year = "2020",
abstract = "Diagnosis and treatment of some important diseased and metabolic disorders is based on successful detection of albumin. In this work, we aim to develop a simple immunosensor for the detection of human serum albumin in biological fluids. Anti-human albumin antibody was covalently attached to the activated surface of screen-printed carbon electrodes enriched with carboxyl graphene/gold nanoparticles composite. Microstructure (TEM, FE-SEM, XRD) and electrochemical (CV, EIS) characterization methods were used to investigate composite properties and to confirm the successful modification of the electrodes. Under the optimal conditions, linear working range and limit of detection were 2.5–500 μg/mL and 1.55 μg/mL, respectively. Additionally, the effect of some possibly interfering compounds was investigated and the immunosensor was used for real sample analysis. The results showed that the sensor exhibited accurate, precise and sensitive characteristics and can be promising replacement to the convention methods for albumin detection in clinical practice.",
publisher = "Elsevier",
journal = "Journal of Electroanalytical Chemistry",
title = "Anti-human albumin monoclonal antibody immobilized on EDC-NHS functionalized carboxylic graphene/AuNPs composite as promising electrochemical HSA immunosensor",
volume = "860",
pages = "113928",
doi = "10.1016/j.jelechem.2020.113928"
}

Stanković, V., Đurđić, S. Z., Ognjanović, M., Antić, B., Kalcher, K., Mutić, J.,& Stanković, D.. (2020). Anti-human albumin monoclonal antibody immobilized on EDC-NHS functionalized carboxylic graphene/AuNPs composite as promising electrochemical HSA immunosensor. in Journal of Electroanalytical Chemistry
Elsevier., 860, 113928.
https://doi.org/10.1016/j.jelechem.2020.113928

Stanković V, Đurđić SZ, Ognjanović M, Antić B, Kalcher K, Mutić J, Stanković D. Anti-human albumin monoclonal antibody immobilized on EDC-NHS functionalized carboxylic graphene/AuNPs composite as promising electrochemical HSA immunosensor. in Journal of Electroanalytical Chemistry. 2020;860:113928.
doi:10.1016/j.jelechem.2020.113928 .

Stanković, Vesna, Đurđić, Slađana Z., Ognjanović, Miloš, Antić, Bratislav, Kalcher, Kurt, Mutić, Jelena, Stanković, Dalibor, "Anti-human albumin monoclonal antibody immobilized on EDC-NHS functionalized carboxylic graphene/AuNPs composite as promising electrochemical HSA immunosensor" in Journal of Electroanalytical Chemistry, 860 (2020):113928,
https://doi.org/10.1016/j.jelechem.2020.113928 . .

TY  - DATA
AU  - Stanković, Vesna
AU  - Đurđić, Slađana Z.
AU  - Ognjanović, Miloš
AU  - Antić, Bratislav
AU  - Kalcher, Kurt
AU  - Mutić, Jelena
AU  - Stanković, Dalibor
PY  - 2020
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/3892
PB  - Elsevier
T2  - Journal of Electroanalytical Chemistry
T1  - Supplementary data for the article: Stanković, V.; Đurđić, S.; Ognjanović, M.; Antić, B.; Kalcher, K.; Mutić, J.; Stanković, D. M. Anti-Human Albumin Monoclonal Antibody Immobilized on EDC-NHS Functionalized Carboxylic Graphene/AuNPs Composite as Promising Electrochemical HSA Immunosensor. Journal of Electroanalytical Chemistry 2020, 860. https://doi.org/10.1016/j.jelechem.2020.113928
UR  - https://hdl.handle.net/21.15107/rcub_cherry_3892
ER  - 

@misc{
author = "Stanković, Vesna and Đurđić, Slađana Z. and Ognjanović, Miloš and Antić, Bratislav and Kalcher, Kurt and Mutić, Jelena and Stanković, Dalibor",
year = "2020",
publisher = "Elsevier",
journal = "Journal of Electroanalytical Chemistry",
title = "Supplementary data for the article: Stanković, V.; Đurđić, S.; Ognjanović, M.; Antić, B.; Kalcher, K.; Mutić, J.; Stanković, D. M. Anti-Human Albumin Monoclonal Antibody Immobilized on EDC-NHS Functionalized Carboxylic Graphene/AuNPs Composite as Promising Electrochemical HSA Immunosensor. Journal of Electroanalytical Chemistry 2020, 860. https://doi.org/10.1016/j.jelechem.2020.113928",
url = "https://hdl.handle.net/21.15107/rcub_cherry_3892"
}

Stanković, V., Đurđić, S. Z., Ognjanović, M., Antić, B., Kalcher, K., Mutić, J.,& Stanković, D.. (2020). Supplementary data for the article: Stanković, V.; Đurđić, S.; Ognjanović, M.; Antić, B.; Kalcher, K.; Mutić, J.; Stanković, D. M. Anti-Human Albumin Monoclonal Antibody Immobilized on EDC-NHS Functionalized Carboxylic Graphene/AuNPs Composite as Promising Electrochemical HSA Immunosensor. Journal of Electroanalytical Chemistry 2020, 860. https://doi.org/10.1016/j.jelechem.2020.113928. in Journal of Electroanalytical Chemistry
Elsevier..
https://hdl.handle.net/21.15107/rcub_cherry_3892

Stanković V, Đurđić SZ, Ognjanović M, Antić B, Kalcher K, Mutić J, Stanković D. Supplementary data for the article: Stanković, V.; Đurđić, S.; Ognjanović, M.; Antić, B.; Kalcher, K.; Mutić, J.; Stanković, D. M. Anti-Human Albumin Monoclonal Antibody Immobilized on EDC-NHS Functionalized Carboxylic Graphene/AuNPs Composite as Promising Electrochemical HSA Immunosensor. Journal of Electroanalytical Chemistry 2020, 860. https://doi.org/10.1016/j.jelechem.2020.113928. in Journal of Electroanalytical Chemistry. 2020;.
https://hdl.handle.net/21.15107/rcub_cherry_3892 .

Stanković, Vesna, Đurđić, Slađana Z., Ognjanović, Miloš, Antić, Bratislav, Kalcher, Kurt, Mutić, Jelena, Stanković, Dalibor, "Supplementary data for the article: Stanković, V.; Đurđić, S.; Ognjanović, M.; Antić, B.; Kalcher, K.; Mutić, J.; Stanković, D. M. Anti-Human Albumin Monoclonal Antibody Immobilized on EDC-NHS Functionalized Carboxylic Graphene/AuNPs Composite as Promising Electrochemical HSA Immunosensor. Journal of Electroanalytical Chemistry 2020, 860. https://doi.org/10.1016/j.jelechem.2020.113928" in Journal of Electroanalytical Chemistry (2020),
https://hdl.handle.net/21.15107/rcub_cherry_3892 .

TY  - JOUR
AU  - Stanković, Vesna
AU  - Đurđić, Slađana Z.
AU  - Ognjanović, Miloš
AU  - Mutić, Jelena
AU  - Kalcher, Kurt
AU  - Stanković, Dalibor
PY  - 2020
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/4033
AB  - A nonenzymatic hydrogen-peroxide sensor was developed by utilization of silver nanoparticles and graphene nanoribbons. The mentioned composite was inflicted on a screen-printed carbon electrode which provides disposable, ready-to-use sensor. The structure and morphology of the nanocomposite were analyzed by scanning electron microscopy and X-ray diffraction. The sensor has excellent performance toward H2O2 amperometric detection. Figures of merit include dynamic response range from 0.05 to 5 mM and detection limit of 20 μM (at S/N = 3). The fabricated sensor was used for the determination of H2O2 in milk samples. The obtained results showed that the proposed AgNp@GNR/SPCE sensor can be used for the determination of hydrogen peroxide in real samples.
PB  - Elsevier
T2  - Journal of Electroanalytical Chemistry
T1  - A novel nonenzymatic hydrogen peroxide amperometric sensor based on AgNp@GNR nanocomposites modified screen-printed carbon electrode
VL  - 876
SP  - 114487
DO  - 10.1016/j.jelechem.2020.114487
ER  - 

@article{
author = "Stanković, Vesna and Đurđić, Slađana Z. and Ognjanović, Miloš and Mutić, Jelena and Kalcher, Kurt and Stanković, Dalibor",
year = "2020",
abstract = "A nonenzymatic hydrogen-peroxide sensor was developed by utilization of silver nanoparticles and graphene nanoribbons. The mentioned composite was inflicted on a screen-printed carbon electrode which provides disposable, ready-to-use sensor. The structure and morphology of the nanocomposite were analyzed by scanning electron microscopy and X-ray diffraction. The sensor has excellent performance toward H2O2 amperometric detection. Figures of merit include dynamic response range from 0.05 to 5 mM and detection limit of 20 μM (at S/N = 3). The fabricated sensor was used for the determination of H2O2 in milk samples. The obtained results showed that the proposed AgNp@GNR/SPCE sensor can be used for the determination of hydrogen peroxide in real samples.",
publisher = "Elsevier",
journal = "Journal of Electroanalytical Chemistry",
title = "A novel nonenzymatic hydrogen peroxide amperometric sensor based on AgNp@GNR nanocomposites modified screen-printed carbon electrode",
volume = "876",
pages = "114487",
doi = "10.1016/j.jelechem.2020.114487"
}

Stanković, V., Đurđić, S. Z., Ognjanović, M., Mutić, J., Kalcher, K.,& Stanković, D.. (2020). A novel nonenzymatic hydrogen peroxide amperometric sensor based on AgNp@GNR nanocomposites modified screen-printed carbon electrode. in Journal of Electroanalytical Chemistry
Elsevier., 876, 114487.
https://doi.org/10.1016/j.jelechem.2020.114487

Stanković V, Đurđić SZ, Ognjanović M, Mutić J, Kalcher K, Stanković D. A novel nonenzymatic hydrogen peroxide amperometric sensor based on AgNp@GNR nanocomposites modified screen-printed carbon electrode. in Journal of Electroanalytical Chemistry. 2020;876:114487.
doi:10.1016/j.jelechem.2020.114487 .

Stanković, Vesna, Đurđić, Slađana Z., Ognjanović, Miloš, Mutić, Jelena, Kalcher, Kurt, Stanković, Dalibor, "A novel nonenzymatic hydrogen peroxide amperometric sensor based on AgNp@GNR nanocomposites modified screen-printed carbon electrode" in Journal of Electroanalytical Chemistry, 876 (2020):114487,
https://doi.org/10.1016/j.jelechem.2020.114487 . .

TY  - DATA
AU  - Stanković, Vesna
AU  - Đurđić, Slađana Z.
AU  - Ognjanović, Miloš
AU  - Mutić, Jelena
AU  - Kalcher, Kurt
AU  - Stanković, Dalibor
PY  - 2020
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/4034
PB  - Elsevier
T2  - Journal of Electroanalytical Chemistry
T1  - Supplementary data for the article: Stanković, V.; Đurđić, S.; Ognjanović, M.; Mutić, J.; Kalcher, K.; Stanković, D. M. A Novel Nonenzymatic Hydrogen Peroxide Amperometric Sensor Based on AgNp@GNR Nanocomposites Modified Screen-Printed Carbon Electrode. Journal of Electroanalytical Chemistry 2020, 876, 114487. https://doi.org/10.1016/j.jelechem.2020.114487
UR  - https://hdl.handle.net/21.15107/rcub_cherry_4034
ER  - 

@misc{
author = "Stanković, Vesna and Đurđić, Slađana Z. and Ognjanović, Miloš and Mutić, Jelena and Kalcher, Kurt and Stanković, Dalibor",
year = "2020",
publisher = "Elsevier",
journal = "Journal of Electroanalytical Chemistry",
title = "Supplementary data for the article: Stanković, V.; Đurđić, S.; Ognjanović, M.; Mutić, J.; Kalcher, K.; Stanković, D. M. A Novel Nonenzymatic Hydrogen Peroxide Amperometric Sensor Based on AgNp@GNR Nanocomposites Modified Screen-Printed Carbon Electrode. Journal of Electroanalytical Chemistry 2020, 876, 114487. https://doi.org/10.1016/j.jelechem.2020.114487",
url = "https://hdl.handle.net/21.15107/rcub_cherry_4034"
}

Stanković, V., Đurđić, S. Z., Ognjanović, M., Mutić, J., Kalcher, K.,& Stanković, D.. (2020). Supplementary data for the article: Stanković, V.; Đurđić, S.; Ognjanović, M.; Mutić, J.; Kalcher, K.; Stanković, D. M. A Novel Nonenzymatic Hydrogen Peroxide Amperometric Sensor Based on AgNp@GNR Nanocomposites Modified Screen-Printed Carbon Electrode. Journal of Electroanalytical Chemistry 2020, 876, 114487. https://doi.org/10.1016/j.jelechem.2020.114487. in Journal of Electroanalytical Chemistry
Elsevier..
https://hdl.handle.net/21.15107/rcub_cherry_4034

Stanković V, Đurđić SZ, Ognjanović M, Mutić J, Kalcher K, Stanković D. Supplementary data for the article: Stanković, V.; Đurđić, S.; Ognjanović, M.; Mutić, J.; Kalcher, K.; Stanković, D. M. A Novel Nonenzymatic Hydrogen Peroxide Amperometric Sensor Based on AgNp@GNR Nanocomposites Modified Screen-Printed Carbon Electrode. Journal of Electroanalytical Chemistry 2020, 876, 114487. https://doi.org/10.1016/j.jelechem.2020.114487. in Journal of Electroanalytical Chemistry. 2020;.
https://hdl.handle.net/21.15107/rcub_cherry_4034 .

Stanković, Vesna, Đurđić, Slađana Z., Ognjanović, Miloš, Mutić, Jelena, Kalcher, Kurt, Stanković, Dalibor, "Supplementary data for the article: Stanković, V.; Đurđić, S.; Ognjanović, M.; Mutić, J.; Kalcher, K.; Stanković, D. M. A Novel Nonenzymatic Hydrogen Peroxide Amperometric Sensor Based on AgNp@GNR Nanocomposites Modified Screen-Printed Carbon Electrode. Journal of Electroanalytical Chemistry 2020, 876, 114487. https://doi.org/10.1016/j.jelechem.2020.114487" in Journal of Electroanalytical Chemistry (2020),
https://hdl.handle.net/21.15107/rcub_cherry_4034 .

TY  - JOUR
AU  - Đurđić, Slađana Z.
AU  - Vukojević, Vesna
AU  - Vlahović, Filip
AU  - Ognjanović, Miloš
AU  - Švorc, Ľubomir
AU  - Kalcher, Kurt
AU  - Mutić, Jelena
AU  - Stanković, Dalibor
PY  - 2019
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/3751
AB  - In present work we report application of bismuth (III) oxide (Bi2O3) decorated graphene nanoribbons (GNR)
composite for modification of screen printed electrode, and use of resulting modified screen-printed electrode
(SPCE/GNR/Bi2O3) as a disposable glucose biosensor. The composite was synthesized by use of co-precipitation
method followed by ultra-sonication. After characterization, the material was applied on the surface of the
screen-printed electrode in a ‘drop casting’ fashion. Glucose oxidase (GOx) was added to the modified surface
and finally covered by Nafion film. Resulting biosensor electrode (SPCE/GNR/Bi2O3/GOx/Naf) shows excellent
performance toward glucose detection, with working linear range from 0.28 to 1.70 mM and detection limit of
0.07 mM. Prepared biosensor was applied for the estimation of glucose level in standard honey samples with declared glucose level, in order to validate the methods (PT scheme). Obtained results are indicating excellent stability, reproducibility, accuracy and precision of the method for the determination of glucose in such samples
with negligible matrix effect. Developed biosensor showed high precision, accuracy and selectivity even when
employed for determination of glucose content in blood serum and urine samples. Proposed biosensor construction shows promising results and can be considered as stabile and reproducible tool for detection and quantification of glucose in investigated samples.
PB  - Elsevier
T2  - Journal of Electroanalytical Chemistry
T1  - Application of bismuth (III) oxide decorated graphene nanoribbons for enzymatic glucose biosensing
VL  - 850
DO  - 10.1016/j.jelechem.2019.113400
ER  - 

@article{
author = "Đurđić, Slađana Z. and Vukojević, Vesna and Vlahović, Filip and Ognjanović, Miloš and Švorc, Ľubomir and Kalcher, Kurt and Mutić, Jelena and Stanković, Dalibor",
year = "2019",
abstract = "In present work we report application of bismuth (III) oxide (Bi2O3) decorated graphene nanoribbons (GNR)
composite for modification of screen printed electrode, and use of resulting modified screen-printed electrode
(SPCE/GNR/Bi2O3) as a disposable glucose biosensor. The composite was synthesized by use of co-precipitation
method followed by ultra-sonication. After characterization, the material was applied on the surface of the
screen-printed electrode in a ‘drop casting’ fashion. Glucose oxidase (GOx) was added to the modified surface
and finally covered by Nafion film. Resulting biosensor electrode (SPCE/GNR/Bi2O3/GOx/Naf) shows excellent
performance toward glucose detection, with working linear range from 0.28 to 1.70 mM and detection limit of
0.07 mM. Prepared biosensor was applied for the estimation of glucose level in standard honey samples with declared glucose level, in order to validate the methods (PT scheme). Obtained results are indicating excellent stability, reproducibility, accuracy and precision of the method for the determination of glucose in such samples
with negligible matrix effect. Developed biosensor showed high precision, accuracy and selectivity even when
employed for determination of glucose content in blood serum and urine samples. Proposed biosensor construction shows promising results and can be considered as stabile and reproducible tool for detection and quantification of glucose in investigated samples.",
publisher = "Elsevier",
journal = "Journal of Electroanalytical Chemistry",
title = "Application of bismuth (III) oxide decorated graphene nanoribbons for enzymatic glucose biosensing",
volume = "850",
doi = "10.1016/j.jelechem.2019.113400"
}

Đurđić, S. Z., Vukojević, V., Vlahović, F., Ognjanović, M., Švorc, Ľ., Kalcher, K., Mutić, J.,& Stanković, D.. (2019). Application of bismuth (III) oxide decorated graphene nanoribbons for enzymatic glucose biosensing. in Journal of Electroanalytical Chemistry
Elsevier., 850.
https://doi.org/10.1016/j.jelechem.2019.113400

Đurđić SZ, Vukojević V, Vlahović F, Ognjanović M, Švorc Ľ, Kalcher K, Mutić J, Stanković D. Application of bismuth (III) oxide decorated graphene nanoribbons for enzymatic glucose biosensing. in Journal of Electroanalytical Chemistry. 2019;850.
doi:10.1016/j.jelechem.2019.113400 .

Đurđić, Slađana Z., Vukojević, Vesna, Vlahović, Filip, Ognjanović, Miloš, Švorc, Ľubomir, Kalcher, Kurt, Mutić, Jelena, Stanković, Dalibor, "Application of bismuth (III) oxide decorated graphene nanoribbons for enzymatic glucose biosensing" in Journal of Electroanalytical Chemistry, 850 (2019),
https://doi.org/10.1016/j.jelechem.2019.113400 . .

TY  - DATA
AU  - Đurđić, Slađana Z.
AU  - Vukojević, Vesna
AU  - Vlahović, Filip
AU  - Ognjanović, Miloš
AU  - Švorc, Ľubomir
AU  - Kalcher, Kurt
AU  - Mutić, Jelena
AU  - Stanković, Dalibor
PY  - 2019
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/3752
PB  - Elsevier
T2  - Journal of Electroanalytical Chemistry
T1  - Supplementary data for article: Đurđić, S.; Vukojević, V.; Vlahović, F.; Ognjanović, M.; Švorc; Kalcher, K.; Mutić, J.; Stanković, D. M. Application of Bismuth (III) Oxide Decorated Graphene Nanoribbons for Enzymatic Glucose Biosensing. Journal of Electroanalytical Chemistry 2019, 850. https://doi.org/10.1016/j.jelechem.2019.113400
UR  - https://hdl.handle.net/21.15107/rcub_cherry_3752
ER  - 

@misc{
author = "Đurđić, Slađana Z. and Vukojević, Vesna and Vlahović, Filip and Ognjanović, Miloš and Švorc, Ľubomir and Kalcher, Kurt and Mutić, Jelena and Stanković, Dalibor",
year = "2019",
publisher = "Elsevier",
journal = "Journal of Electroanalytical Chemistry",
title = "Supplementary data for article: Đurđić, S.; Vukojević, V.; Vlahović, F.; Ognjanović, M.; Švorc; Kalcher, K.; Mutić, J.; Stanković, D. M. Application of Bismuth (III) Oxide Decorated Graphene Nanoribbons for Enzymatic Glucose Biosensing. Journal of Electroanalytical Chemistry 2019, 850. https://doi.org/10.1016/j.jelechem.2019.113400",
url = "https://hdl.handle.net/21.15107/rcub_cherry_3752"
}

Đurđić, S. Z., Vukojević, V., Vlahović, F., Ognjanović, M., Švorc, Ľ., Kalcher, K., Mutić, J.,& Stanković, D.. (2019). Supplementary data for article: Đurđić, S.; Vukojević, V.; Vlahović, F.; Ognjanović, M.; Švorc; Kalcher, K.; Mutić, J.; Stanković, D. M. Application of Bismuth (III) Oxide Decorated Graphene Nanoribbons for Enzymatic Glucose Biosensing. Journal of Electroanalytical Chemistry 2019, 850. https://doi.org/10.1016/j.jelechem.2019.113400. in Journal of Electroanalytical Chemistry
Elsevier..
https://hdl.handle.net/21.15107/rcub_cherry_3752

Đurđić SZ, Vukojević V, Vlahović F, Ognjanović M, Švorc Ľ, Kalcher K, Mutić J, Stanković D. Supplementary data for article: Đurđić, S.; Vukojević, V.; Vlahović, F.; Ognjanović, M.; Švorc; Kalcher, K.; Mutić, J.; Stanković, D. M. Application of Bismuth (III) Oxide Decorated Graphene Nanoribbons for Enzymatic Glucose Biosensing. Journal of Electroanalytical Chemistry 2019, 850. https://doi.org/10.1016/j.jelechem.2019.113400. in Journal of Electroanalytical Chemistry. 2019;.
https://hdl.handle.net/21.15107/rcub_cherry_3752 .

Đurđić, Slađana Z., Vukojević, Vesna, Vlahović, Filip, Ognjanović, Miloš, Švorc, Ľubomir, Kalcher, Kurt, Mutić, Jelena, Stanković, Dalibor, "Supplementary data for article: Đurđić, S.; Vukojević, V.; Vlahović, F.; Ognjanović, M.; Švorc; Kalcher, K.; Mutić, J.; Stanković, D. M. Application of Bismuth (III) Oxide Decorated Graphene Nanoribbons for Enzymatic Glucose Biosensing. Journal of Electroanalytical Chemistry 2019, 850. https://doi.org/10.1016/j.jelechem.2019.113400" in Journal of Electroanalytical Chemistry (2019),
https://hdl.handle.net/21.15107/rcub_cherry_3752 .

TY  - JOUR
AU  - Butmee, P.
AU  - Tumcharern, G.
AU  - Saejueng, P.
AU  - Stanković, Dalibor
AU  - Ortner, Astrid
AU  - Jitcharoen, J.
AU  - Kalcher, Kurt
AU  - Samphao, Anchalee
PY  - 2019
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/2805
AB  - A simple electrochemical sensor for bisphenol A (BPA) was developed based on a composite of graphene nanoplatelets (GNPs) and 1-butyl-2, 3-dimethylimidazolium tetrafluoroborate (ionic liquid, IL) as a modifier for glassy carbon paste electrodes (GCPEs). Scanning electron (SEM) and atomic force microscopy (AFM) were employed to characterize the morphology and surface modification. The electrochemical behavior of BPA on IL-GNP/GCPEs was investigated and the results showed that IL-GNP composites enhance the electrochemical signal toward BPA due to the synergetic effect of GNPs and IL. The experimental parameters including the amount of IL and GNPs, pH of solution, pulse potential, step potential, and scan rate were optimized. Under optimal conditions, the proposed sensor exhibited a linear relationship between signal and BPA concentrations ranging from 0.02–5.0 μM, with detection and quantification limits of 6.4 nM and 0.02 μM respectively. Moreover, the electrochemical sensor showed good repeatability (RSD = 3.3%, n = 5 measurements), good reproducibility (RSD = 3.8%, n = 5 sensors), high accuracy of 95.3–104.5% recovery, acceptable selectivity, and stability. The sensor was successfully applied to the determination of BPA in water samples in contact with plastic materials. The results were satisfactory and in agreement with reference values from a standard HPLC method.
T2  - Journal of Electroanalytical Chemistry
T1  - A direct and sensitive electrochemical sensing platform based on ionic liquid functionalized graphene nanoplatelets for the detection of bisphenol A
VL  - 833
SP  - 370
EP  - 379
DO  - 10.1016/j.jelechem.2018.12.014
ER  - 

@article{
author = "Butmee, P. and Tumcharern, G. and Saejueng, P. and Stanković, Dalibor and Ortner, Astrid and Jitcharoen, J. and Kalcher, Kurt and Samphao, Anchalee",
year = "2019",
abstract = "A simple electrochemical sensor for bisphenol A (BPA) was developed based on a composite of graphene nanoplatelets (GNPs) and 1-butyl-2, 3-dimethylimidazolium tetrafluoroborate (ionic liquid, IL) as a modifier for glassy carbon paste electrodes (GCPEs). Scanning electron (SEM) and atomic force microscopy (AFM) were employed to characterize the morphology and surface modification. The electrochemical behavior of BPA on IL-GNP/GCPEs was investigated and the results showed that IL-GNP composites enhance the electrochemical signal toward BPA due to the synergetic effect of GNPs and IL. The experimental parameters including the amount of IL and GNPs, pH of solution, pulse potential, step potential, and scan rate were optimized. Under optimal conditions, the proposed sensor exhibited a linear relationship between signal and BPA concentrations ranging from 0.02–5.0 μM, with detection and quantification limits of 6.4 nM and 0.02 μM respectively. Moreover, the electrochemical sensor showed good repeatability (RSD = 3.3%, n = 5 measurements), good reproducibility (RSD = 3.8%, n = 5 sensors), high accuracy of 95.3–104.5% recovery, acceptable selectivity, and stability. The sensor was successfully applied to the determination of BPA in water samples in contact with plastic materials. The results were satisfactory and in agreement with reference values from a standard HPLC method.",
journal = "Journal of Electroanalytical Chemistry",
title = "A direct and sensitive electrochemical sensing platform based on ionic liquid functionalized graphene nanoplatelets for the detection of bisphenol A",
volume = "833",
pages = "370-379",
doi = "10.1016/j.jelechem.2018.12.014"
}

Butmee, P., Tumcharern, G., Saejueng, P., Stanković, D., Ortner, A., Jitcharoen, J., Kalcher, K.,& Samphao, A.. (2019). A direct and sensitive electrochemical sensing platform based on ionic liquid functionalized graphene nanoplatelets for the detection of bisphenol A. in Journal of Electroanalytical Chemistry, 833, 370-379.
https://doi.org/10.1016/j.jelechem.2018.12.014

Butmee P, Tumcharern G, Saejueng P, Stanković D, Ortner A, Jitcharoen J, Kalcher K, Samphao A. A direct and sensitive electrochemical sensing platform based on ionic liquid functionalized graphene nanoplatelets for the detection of bisphenol A. in Journal of Electroanalytical Chemistry. 2019;833:370-379.
doi:10.1016/j.jelechem.2018.12.014 .

Butmee, P., Tumcharern, G., Saejueng, P., Stanković, Dalibor, Ortner, Astrid, Jitcharoen, J., Kalcher, Kurt, Samphao, Anchalee, "A direct and sensitive electrochemical sensing platform based on ionic liquid functionalized graphene nanoplatelets for the detection of bisphenol A" in Journal of Electroanalytical Chemistry, 833 (2019):370-379,
https://doi.org/10.1016/j.jelechem.2018.12.014 . .

TY  - JOUR
AU  - Butmee, P.
AU  - Tumcharern, G.
AU  - Saejueng, P.
AU  - Stanković, Dalibor
AU  - Ortner, Astrid
AU  - Jitcharoen, J.
AU  - Kalcher, Kurt
AU  - Samphao, Anchalee
PY  - 2019
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/2805
AB  - A simple electrochemical sensor for bisphenol A (BPA) was developed based on a composite of graphene nanoplatelets (GNPs) and 1-butyl-2, 3-dimethylimidazolium tetrafluoroborate (ionic liquid, IL) as a modifier for glassy carbon paste electrodes (GCPEs). Scanning electron (SEM) and atomic force microscopy (AFM) were employed to characterize the morphology and surface modification. The electrochemical behavior of BPA on IL-GNP/GCPEs was investigated and the results showed that IL-GNP composites enhance the electrochemical signal toward BPA due to the synergetic effect of GNPs and IL. The experimental parameters including the amount of IL and GNPs, pH of solution, pulse potential, step potential, and scan rate were optimized. Under optimal conditions, the proposed sensor exhibited a linear relationship between signal and BPA concentrations ranging from 0.02–5.0 μM, with detection and quantification limits of 6.4 nM and 0.02 μM respectively. Moreover, the electrochemical sensor showed good repeatability (RSD = 3.3%, n = 5 measurements), good reproducibility (RSD = 3.8%, n = 5 sensors), high accuracy of 95.3–104.5% recovery, acceptable selectivity, and stability. The sensor was successfully applied to the determination of BPA in water samples in contact with plastic materials. The results were satisfactory and in agreement with reference values from a standard HPLC method.
T2  - Journal of Electroanalytical Chemistry
T1  - A direct and sensitive electrochemical sensing platform based on ionic liquid functionalized graphene nanoplatelets for the detection of bisphenol A
VL  - 833
SP  - 370
EP  - 379
EP  - M21~
DO  - 10.1016/j.jelechem.2018.12.014
ER  - 

@article{
author = "Butmee, P. and Tumcharern, G. and Saejueng, P. and Stanković, Dalibor and Ortner, Astrid and Jitcharoen, J. and Kalcher, Kurt and Samphao, Anchalee",
year = "2019",
abstract = "A simple electrochemical sensor for bisphenol A (BPA) was developed based on a composite of graphene nanoplatelets (GNPs) and 1-butyl-2, 3-dimethylimidazolium tetrafluoroborate (ionic liquid, IL) as a modifier for glassy carbon paste electrodes (GCPEs). Scanning electron (SEM) and atomic force microscopy (AFM) were employed to characterize the morphology and surface modification. The electrochemical behavior of BPA on IL-GNP/GCPEs was investigated and the results showed that IL-GNP composites enhance the electrochemical signal toward BPA due to the synergetic effect of GNPs and IL. The experimental parameters including the amount of IL and GNPs, pH of solution, pulse potential, step potential, and scan rate were optimized. Under optimal conditions, the proposed sensor exhibited a linear relationship between signal and BPA concentrations ranging from 0.02–5.0 μM, with detection and quantification limits of 6.4 nM and 0.02 μM respectively. Moreover, the electrochemical sensor showed good repeatability (RSD = 3.3%, n = 5 measurements), good reproducibility (RSD = 3.8%, n = 5 sensors), high accuracy of 95.3–104.5% recovery, acceptable selectivity, and stability. The sensor was successfully applied to the determination of BPA in water samples in contact with plastic materials. The results were satisfactory and in agreement with reference values from a standard HPLC method.",
journal = "Journal of Electroanalytical Chemistry",
title = "A direct and sensitive electrochemical sensing platform based on ionic liquid functionalized graphene nanoplatelets for the detection of bisphenol A",
volume = "833",
pages = "370-379-M21~",
doi = "10.1016/j.jelechem.2018.12.014"
}

Butmee, P., Tumcharern, G., Saejueng, P., Stanković, D., Ortner, A., Jitcharoen, J., Kalcher, K.,& Samphao, A.. (2019). A direct and sensitive electrochemical sensing platform based on ionic liquid functionalized graphene nanoplatelets for the detection of bisphenol A. in Journal of Electroanalytical Chemistry, 833, 370-379.
https://doi.org/10.1016/j.jelechem.2018.12.014

Butmee P, Tumcharern G, Saejueng P, Stanković D, Ortner A, Jitcharoen J, Kalcher K, Samphao A. A direct and sensitive electrochemical sensing platform based on ionic liquid functionalized graphene nanoplatelets for the detection of bisphenol A. in Journal of Electroanalytical Chemistry. 2019;833:370-379.
doi:10.1016/j.jelechem.2018.12.014 .

Butmee, P., Tumcharern, G., Saejueng, P., Stanković, Dalibor, Ortner, Astrid, Jitcharoen, J., Kalcher, Kurt, Samphao, Anchalee, "A direct and sensitive electrochemical sensing platform based on ionic liquid functionalized graphene nanoplatelets for the detection of bisphenol A" in Journal of Electroanalytical Chemistry, 833 (2019):370-379,
https://doi.org/10.1016/j.jelechem.2018.12.014 . .

TY  - JOUR
AU  - Kunpatee, Kanjana
AU  - Chamsai, Phuktra
AU  - Mehmeti, Eda
AU  - Stanković, Dalibor
AU  - Ortner, Astrid
AU  - Kalcher, Kurt
AU  - Samphao, Anchalee
PY  - 2019
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/3821
AB  - A sensitive and rapid method for the determination of fenobucarb by using screen-printed carbon electrode modified with graphene nanoribbons - ionic liquid - cobalt phthalocyanine (GNRs-IL-CoPc/SPCE) composites based on flow injection analysis (FIA) was developed and applied to vegetable samples. The prepared GNRs-IL-CoPc composite was characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM), and atomic force microscopy (AFM). Moreover, cyclic voltammetry (CV), differential pulse voltammetry (DPV), and electrochemical impedance spectroscopy (EIS) were used to characterize the electrochemical behavior of the modified SPCE. The amperometric current responses were obtained from the oxidation of 2-sec-butyl-phenol, which is the product of alkaline hydrolysis of fenobucarb. The optimization of chemical variables and instrumental analysis such as composite amounts, pH, applied potential, and flow rate were carried out to obtain the best measurement. Under the optimal conditions, the proposed sensor yielded sensitivity of 0.0884 M/A·cm2, a wide linear range for detection of fenobucarb from 0.025 to 110 μM with a low detection, and quantification limits of 0.0089 μM and 0.0252 μM, respectively. Additionally, the developed sensor showed good repeatability (RSD = 3.5%, n = 10 measurements) and good reproducibility (RSD = 3.9%, n = 5 sensors). The proposed method could be effectively applied for the determination of fenobucarb in vegetable samples.
PB  - Elsevier
T2  - Journal of Electroanalytical Chemistry
T1  - A highly sensitive fenobucarb electrochemical sensor based on graphene nanoribbons-ionic liquid-cobalt phthalocyanine composites modified on screen-printed carbon electrode coupled with a flow injection analysis
VL  - 855
SP  - 113630
DO  - 10.1016/j.jelechem.2019.113630
ER  - 

@article{
author = "Kunpatee, Kanjana and Chamsai, Phuktra and Mehmeti, Eda and Stanković, Dalibor and Ortner, Astrid and Kalcher, Kurt and Samphao, Anchalee",
year = "2019",
abstract = "A sensitive and rapid method for the determination of fenobucarb by using screen-printed carbon electrode modified with graphene nanoribbons - ionic liquid - cobalt phthalocyanine (GNRs-IL-CoPc/SPCE) composites based on flow injection analysis (FIA) was developed and applied to vegetable samples. The prepared GNRs-IL-CoPc composite was characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM), and atomic force microscopy (AFM). Moreover, cyclic voltammetry (CV), differential pulse voltammetry (DPV), and electrochemical impedance spectroscopy (EIS) were used to characterize the electrochemical behavior of the modified SPCE. The amperometric current responses were obtained from the oxidation of 2-sec-butyl-phenol, which is the product of alkaline hydrolysis of fenobucarb. The optimization of chemical variables and instrumental analysis such as composite amounts, pH, applied potential, and flow rate were carried out to obtain the best measurement. Under the optimal conditions, the proposed sensor yielded sensitivity of 0.0884 M/A·cm2, a wide linear range for detection of fenobucarb from 0.025 to 110 μM with a low detection, and quantification limits of 0.0089 μM and 0.0252 μM, respectively. Additionally, the developed sensor showed good repeatability (RSD = 3.5%, n = 10 measurements) and good reproducibility (RSD = 3.9%, n = 5 sensors). The proposed method could be effectively applied for the determination of fenobucarb in vegetable samples.",
publisher = "Elsevier",
journal = "Journal of Electroanalytical Chemistry",
title = "A highly sensitive fenobucarb electrochemical sensor based on graphene nanoribbons-ionic liquid-cobalt phthalocyanine composites modified on screen-printed carbon electrode coupled with a flow injection analysis",
volume = "855",
pages = "113630",
doi = "10.1016/j.jelechem.2019.113630"
}

Kunpatee, K., Chamsai, P., Mehmeti, E., Stanković, D., Ortner, A., Kalcher, K.,& Samphao, A.. (2019). A highly sensitive fenobucarb electrochemical sensor based on graphene nanoribbons-ionic liquid-cobalt phthalocyanine composites modified on screen-printed carbon electrode coupled with a flow injection analysis. in Journal of Electroanalytical Chemistry
Elsevier., 855, 113630.
https://doi.org/10.1016/j.jelechem.2019.113630

Kunpatee K, Chamsai P, Mehmeti E, Stanković D, Ortner A, Kalcher K, Samphao A. A highly sensitive fenobucarb electrochemical sensor based on graphene nanoribbons-ionic liquid-cobalt phthalocyanine composites modified on screen-printed carbon electrode coupled with a flow injection analysis. in Journal of Electroanalytical Chemistry. 2019;855:113630.
doi:10.1016/j.jelechem.2019.113630 .

Kunpatee, Kanjana, Chamsai, Phuktra, Mehmeti, Eda, Stanković, Dalibor, Ortner, Astrid, Kalcher, Kurt, Samphao, Anchalee, "A highly sensitive fenobucarb electrochemical sensor based on graphene nanoribbons-ionic liquid-cobalt phthalocyanine composites modified on screen-printed carbon electrode coupled with a flow injection analysis" in Journal of Electroanalytical Chemistry, 855 (2019):113630,
https://doi.org/10.1016/j.jelechem.2019.113630 . .

TY  - DATA
AU  - Kunpatee, Kanjana
AU  - Chamsai, Phuktra
AU  - Mehmeti, Eda
AU  - Stanković, Dalibor
AU  - Ortner, Astrid
AU  - Kalcher, Kurt
AU  - Samphao, Anchalee
PY  - 2019
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/3824
PB  - Elsevier
T2  - Journal of Electroanalytical Chemistry
T1  - Supplementary data for the article: Kunpatee, K.; Chamsai, P.; Mehmeti, E.; Stankovic, D. M.; Ortner, A.; Kalcher, K.; Samphao, A. A Highly Sensitive Fenobucarb Electrochemical Sensor Based on Graphene Nanoribbons-Ionic Liquid-Cobalt Phthalocyanine Composites Modified on Screen-Printed Carbon Electrode Coupled with a Flow Injection Analysis. Journal of Electroanalytical Chemistry 2019, 855. https://doi.org/10.1016/j.jelechem.2019.113630
UR  - https://hdl.handle.net/21.15107/rcub_cherry_3824
ER  - 

@misc{
author = "Kunpatee, Kanjana and Chamsai, Phuktra and Mehmeti, Eda and Stanković, Dalibor and Ortner, Astrid and Kalcher, Kurt and Samphao, Anchalee",
year = "2019",
publisher = "Elsevier",
journal = "Journal of Electroanalytical Chemistry",
title = "Supplementary data for the article: Kunpatee, K.; Chamsai, P.; Mehmeti, E.; Stankovic, D. M.; Ortner, A.; Kalcher, K.; Samphao, A. A Highly Sensitive Fenobucarb Electrochemical Sensor Based on Graphene Nanoribbons-Ionic Liquid-Cobalt Phthalocyanine Composites Modified on Screen-Printed Carbon Electrode Coupled with a Flow Injection Analysis. Journal of Electroanalytical Chemistry 2019, 855. https://doi.org/10.1016/j.jelechem.2019.113630",
url = "https://hdl.handle.net/21.15107/rcub_cherry_3824"
}

Kunpatee, K., Chamsai, P., Mehmeti, E., Stanković, D., Ortner, A., Kalcher, K.,& Samphao, A.. (2019). Supplementary data for the article: Kunpatee, K.; Chamsai, P.; Mehmeti, E.; Stankovic, D. M.; Ortner, A.; Kalcher, K.; Samphao, A. A Highly Sensitive Fenobucarb Electrochemical Sensor Based on Graphene Nanoribbons-Ionic Liquid-Cobalt Phthalocyanine Composites Modified on Screen-Printed Carbon Electrode Coupled with a Flow Injection Analysis. Journal of Electroanalytical Chemistry 2019, 855. https://doi.org/10.1016/j.jelechem.2019.113630. in Journal of Electroanalytical Chemistry
Elsevier..
https://hdl.handle.net/21.15107/rcub_cherry_3824

Kunpatee K, Chamsai P, Mehmeti E, Stanković D, Ortner A, Kalcher K, Samphao A. Supplementary data for the article: Kunpatee, K.; Chamsai, P.; Mehmeti, E.; Stankovic, D. M.; Ortner, A.; Kalcher, K.; Samphao, A. A Highly Sensitive Fenobucarb Electrochemical Sensor Based on Graphene Nanoribbons-Ionic Liquid-Cobalt Phthalocyanine Composites Modified on Screen-Printed Carbon Electrode Coupled with a Flow Injection Analysis. Journal of Electroanalytical Chemistry 2019, 855. https://doi.org/10.1016/j.jelechem.2019.113630. in Journal of Electroanalytical Chemistry. 2019;.
https://hdl.handle.net/21.15107/rcub_cherry_3824 .

Kunpatee, Kanjana, Chamsai, Phuktra, Mehmeti, Eda, Stanković, Dalibor, Ortner, Astrid, Kalcher, Kurt, Samphao, Anchalee, "Supplementary data for the article: Kunpatee, K.; Chamsai, P.; Mehmeti, E.; Stankovic, D. M.; Ortner, A.; Kalcher, K.; Samphao, A. A Highly Sensitive Fenobucarb Electrochemical Sensor Based on Graphene Nanoribbons-Ionic Liquid-Cobalt Phthalocyanine Composites Modified on Screen-Printed Carbon Electrode Coupled with a Flow Injection Analysis. Journal of Electroanalytical Chemistry 2019, 855. https://doi.org/10.1016/j.jelechem.2019.113630" in Journal of Electroanalytical Chemistry (2019),
https://hdl.handle.net/21.15107/rcub_cherry_3824 .

TY  - JOUR
AU  - Vukojević, Vesna
AU  - Đurđić, Slađana Z.
AU  - Ognjanović, Miloš
AU  - Fabian, Martin
AU  - Samphao, Anchalee
AU  - Kalcher, Kurt
AU  - Stanković, Dalibor
PY  - 2018
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/2987
AB  - A disposable glucose biosensor was prepared using nanoparticles of MnO2 decorated on graphene nanoribbons by surface modification with drop coating with the GOx and Nafion (R). Tested material was synthesized and characterized using several techniques. The biosensor could be operated under physiological conditions (0.1 M phosphate buffer, pH 7.4) and exhibited good reproducibility and stability. The linear range for the amperometric response of the biosensor at operating potential of +0.50 (versus Ag/AgCl) was from 0.1 to 1.4 mmol/l, with a detection limit of 0.05 mmol/l and high sensitivity of 56.32 mu A/mmol cm(2). Developed method was tested toward glucose quantification in real samples with satisfactory accuracy and precision.
PB  - Elsevier Science Sa, Lausanne
T2  - Journal of Electroanalytical Chemistry
T1  - Enzymatic glucose biosensor based on manganese dioxide nanoparticles decorated on graphene nanoribbons
VL  - 823
SP  - 610
EP  - 616
DO  - 10.1016/j.jelechem.2018.07.013
ER  - 

@article{
author = "Vukojević, Vesna and Đurđić, Slađana Z. and Ognjanović, Miloš and Fabian, Martin and Samphao, Anchalee and Kalcher, Kurt and Stanković, Dalibor",
year = "2018",
abstract = "A disposable glucose biosensor was prepared using nanoparticles of MnO2 decorated on graphene nanoribbons by surface modification with drop coating with the GOx and Nafion (R). Tested material was synthesized and characterized using several techniques. The biosensor could be operated under physiological conditions (0.1 M phosphate buffer, pH 7.4) and exhibited good reproducibility and stability. The linear range for the amperometric response of the biosensor at operating potential of +0.50 (versus Ag/AgCl) was from 0.1 to 1.4 mmol/l, with a detection limit of 0.05 mmol/l and high sensitivity of 56.32 mu A/mmol cm(2). Developed method was tested toward glucose quantification in real samples with satisfactory accuracy and precision.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Journal of Electroanalytical Chemistry",
title = "Enzymatic glucose biosensor based on manganese dioxide nanoparticles decorated on graphene nanoribbons",
volume = "823",
pages = "610-616",
doi = "10.1016/j.jelechem.2018.07.013"
}

Vukojević, V., Đurđić, S. Z., Ognjanović, M., Fabian, M., Samphao, A., Kalcher, K.,& Stanković, D.. (2018). Enzymatic glucose biosensor based on manganese dioxide nanoparticles decorated on graphene nanoribbons. in Journal of Electroanalytical Chemistry
Elsevier Science Sa, Lausanne., 823, 610-616.
https://doi.org/10.1016/j.jelechem.2018.07.013

Vukojević V, Đurđić SZ, Ognjanović M, Fabian M, Samphao A, Kalcher K, Stanković D. Enzymatic glucose biosensor based on manganese dioxide nanoparticles decorated on graphene nanoribbons. in Journal of Electroanalytical Chemistry. 2018;823:610-616.
doi:10.1016/j.jelechem.2018.07.013 .

Vukojević, Vesna, Đurđić, Slađana Z., Ognjanović, Miloš, Fabian, Martin, Samphao, Anchalee, Kalcher, Kurt, Stanković, Dalibor, "Enzymatic glucose biosensor based on manganese dioxide nanoparticles decorated on graphene nanoribbons" in Journal of Electroanalytical Chemistry, 823 (2018):610-616,
https://doi.org/10.1016/j.jelechem.2018.07.013 . .

TY  - DATA
AU  - Vukojević, Vesna
AU  - Đurđić, Slađana Z.
AU  - Ognjanović, Miloš
AU  - Fabian, Martin
AU  - Samphao, Anchalee
AU  - Kalcher, Kurt
AU  - Stanković, Dalibor
PY  - 2018
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/2988
PB  - Elsevier Science Sa, Lausanne
T2  - Journal of Electroanalytical Chemistry
T1  - Supplementary material for the article: Vukojević, V.; Djurdjić, S.; Ognjanović, M.; Fabián, M.; Samphao, A.; Kalcher, K.; Stanković, D. M. Enzymatic Glucose Biosensor Based on Manganese Dioxide Nanoparticles Decorated on Graphene Nanoribbons. Journal of Electroanalytical Chemistry 2018, 823, 610–616. https://doi.org/10.1016/j.jelechem.2018.07.013
UR  - https://hdl.handle.net/21.15107/rcub_cherry_2988
ER  - 

@misc{
author = "Vukojević, Vesna and Đurđić, Slađana Z. and Ognjanović, Miloš and Fabian, Martin and Samphao, Anchalee and Kalcher, Kurt and Stanković, Dalibor",
year = "2018",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Journal of Electroanalytical Chemistry",
title = "Supplementary material for the article: Vukojević, V.; Djurdjić, S.; Ognjanović, M.; Fabián, M.; Samphao, A.; Kalcher, K.; Stanković, D. M. Enzymatic Glucose Biosensor Based on Manganese Dioxide Nanoparticles Decorated on Graphene Nanoribbons. Journal of Electroanalytical Chemistry 2018, 823, 610–616. https://doi.org/10.1016/j.jelechem.2018.07.013",
url = "https://hdl.handle.net/21.15107/rcub_cherry_2988"
}

Vukojević, V., Đurđić, S. Z., Ognjanović, M., Fabian, M., Samphao, A., Kalcher, K.,& Stanković, D.. (2018). Supplementary material for the article: Vukojević, V.; Djurdjić, S.; Ognjanović, M.; Fabián, M.; Samphao, A.; Kalcher, K.; Stanković, D. M. Enzymatic Glucose Biosensor Based on Manganese Dioxide Nanoparticles Decorated on Graphene Nanoribbons. Journal of Electroanalytical Chemistry 2018, 823, 610–616. https://doi.org/10.1016/j.jelechem.2018.07.013. in Journal of Electroanalytical Chemistry
Elsevier Science Sa, Lausanne..
https://hdl.handle.net/21.15107/rcub_cherry_2988

Vukojević V, Đurđić SZ, Ognjanović M, Fabian M, Samphao A, Kalcher K, Stanković D. Supplementary material for the article: Vukojević, V.; Djurdjić, S.; Ognjanović, M.; Fabián, M.; Samphao, A.; Kalcher, K.; Stanković, D. M. Enzymatic Glucose Biosensor Based on Manganese Dioxide Nanoparticles Decorated on Graphene Nanoribbons. Journal of Electroanalytical Chemistry 2018, 823, 610–616. https://doi.org/10.1016/j.jelechem.2018.07.013. in Journal of Electroanalytical Chemistry. 2018;.
https://hdl.handle.net/21.15107/rcub_cherry_2988 .

Vukojević, Vesna, Đurđić, Slađana Z., Ognjanović, Miloš, Fabian, Martin, Samphao, Anchalee, Kalcher, Kurt, Stanković, Dalibor, "Supplementary material for the article: Vukojević, V.; Djurdjić, S.; Ognjanović, M.; Fabián, M.; Samphao, A.; Kalcher, K.; Stanković, D. M. Enzymatic Glucose Biosensor Based on Manganese Dioxide Nanoparticles Decorated on Graphene Nanoribbons. Journal of Electroanalytical Chemistry 2018, 823, 610–616. https://doi.org/10.1016/j.jelechem.2018.07.013" in Journal of Electroanalytical Chemistry (2018),
https://hdl.handle.net/21.15107/rcub_cherry_2988 .

TY  - JOUR
AU  - Vukojević, Vesna
AU  - Đurđić, Slađana Z.
AU  - Ognjanović, Miloš
AU  - Antić, Bratislav
AU  - Kalcher, Kurt
AU  - Mutić, Jelena
AU  - Stanković, Dalibor
PY  - 2018
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/2985
AB  - In this work, we aimed to propose a newly synthesized composite material with enhanced electrocatalytic properties as a novel screen-printed sensor for the quantification of NADH. Additionally, the surface was modified with alcohol dehydrogenase for the preparation of an amperometric biosensor for analysis of ethanol. Synthesized material was characterized using several microstructural (FE-SEM, HR-TEM, XRD) and electrochemical (CV, EIS) techniques. The electrochemical response of the tested analytes was investigated as a function of important parameters. Under optimal conditions, the working linear range and limit of detection for ethanol sensing was 1-1800 mu M and 0.19 mu M, respectively. For NADH, the linear range was from 1 to 1300 mu M with limit of detection of 0.52 mu M. Moreover, effects of some possible interfering compounds were investigated and the developed procedure was applied to commercial alcoholic beverages. The results obtained showed satisfactory precision and accuracy of the developed method and confirm the proposed approach could be a possible replacement for the currently used techniques for ethanol and NADH quantification.
PB  - Elsevier Advanced Technology, Oxford
T2  - Biosensors and Bioelectronics
T1  - RuO2/graphene nanoribbon composite supported on screen printed electrode with enhanced electrocatalytic performances toward ethanol and NADH biosensing
VL  - 117
SP  - 392
EP  - 397
DO  - 10.1016/j.bios.2018.06.038
ER  - 

@article{
author = "Vukojević, Vesna and Đurđić, Slađana Z. and Ognjanović, Miloš and Antić, Bratislav and Kalcher, Kurt and Mutić, Jelena and Stanković, Dalibor",
year = "2018",
abstract = "In this work, we aimed to propose a newly synthesized composite material with enhanced electrocatalytic properties as a novel screen-printed sensor for the quantification of NADH. Additionally, the surface was modified with alcohol dehydrogenase for the preparation of an amperometric biosensor for analysis of ethanol. Synthesized material was characterized using several microstructural (FE-SEM, HR-TEM, XRD) and electrochemical (CV, EIS) techniques. The electrochemical response of the tested analytes was investigated as a function of important parameters. Under optimal conditions, the working linear range and limit of detection for ethanol sensing was 1-1800 mu M and 0.19 mu M, respectively. For NADH, the linear range was from 1 to 1300 mu M with limit of detection of 0.52 mu M. Moreover, effects of some possible interfering compounds were investigated and the developed procedure was applied to commercial alcoholic beverages. The results obtained showed satisfactory precision and accuracy of the developed method and confirm the proposed approach could be a possible replacement for the currently used techniques for ethanol and NADH quantification.",
publisher = "Elsevier Advanced Technology, Oxford",
journal = "Biosensors and Bioelectronics",
title = "RuO2/graphene nanoribbon composite supported on screen printed electrode with enhanced electrocatalytic performances toward ethanol and NADH biosensing",
volume = "117",
pages = "392-397",
doi = "10.1016/j.bios.2018.06.038"
}

Vukojević, V., Đurđić, S. Z., Ognjanović, M., Antić, B., Kalcher, K., Mutić, J.,& Stanković, D.. (2018). RuO2/graphene nanoribbon composite supported on screen printed electrode with enhanced electrocatalytic performances toward ethanol and NADH biosensing. in Biosensors and Bioelectronics
Elsevier Advanced Technology, Oxford., 117, 392-397.
https://doi.org/10.1016/j.bios.2018.06.038

Vukojević V, Đurđić SZ, Ognjanović M, Antić B, Kalcher K, Mutić J, Stanković D. RuO2/graphene nanoribbon composite supported on screen printed electrode with enhanced electrocatalytic performances toward ethanol and NADH biosensing. in Biosensors and Bioelectronics. 2018;117:392-397.
doi:10.1016/j.bios.2018.06.038 .

Vukojević, Vesna, Đurđić, Slađana Z., Ognjanović, Miloš, Antić, Bratislav, Kalcher, Kurt, Mutić, Jelena, Stanković, Dalibor, "RuO2/graphene nanoribbon composite supported on screen printed electrode with enhanced electrocatalytic performances toward ethanol and NADH biosensing" in Biosensors and Bioelectronics, 117 (2018):392-397,
https://doi.org/10.1016/j.bios.2018.06.038 . .

TY  - DATA
AU  - Vukojević, Vesna
AU  - Đurđić, Slađana Z.
AU  - Ognjanović, Miloš
AU  - Antić, Bratislav
AU  - Kalcher, Kurt
AU  - Mutić, Jelena
AU  - Stanković, Dalibor
PY  - 2018
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/2986
PB  - Elsevier Advanced Technology, Oxford
T2  - Biosensors and Bioelectronics
T1  - Supplementary material for the article: Vukojević, V.; Djurdjić, S.; Ognjanović, M.; Antić, B.; Kalcher, K.; Mutić, J.; Stanković, D.  M. RuO2/Graphene Nanoribbon Composite Supported on Screen Printed Electrode with  Enhanced Electrocatalytic Performances toward Ethanol and NADH Biosensing. Biosensors  and Bioelectronics 2018, 117, 392–397. https://doi.org/10.1016/j.bios.2018.06.038
UR  - https://hdl.handle.net/21.15107/rcub_cherry_2986
ER  - 

@misc{
author = "Vukojević, Vesna and Đurđić, Slađana Z. and Ognjanović, Miloš and Antić, Bratislav and Kalcher, Kurt and Mutić, Jelena and Stanković, Dalibor",
year = "2018",
publisher = "Elsevier Advanced Technology, Oxford",
journal = "Biosensors and Bioelectronics",
title = "Supplementary material for the article: Vukojević, V.; Djurdjić, S.; Ognjanović, M.; Antić, B.; Kalcher, K.; Mutić, J.; Stanković, D.  M. RuO2/Graphene Nanoribbon Composite Supported on Screen Printed Electrode with  Enhanced Electrocatalytic Performances toward Ethanol and NADH Biosensing. Biosensors  and Bioelectronics 2018, 117, 392–397. https://doi.org/10.1016/j.bios.2018.06.038",
url = "https://hdl.handle.net/21.15107/rcub_cherry_2986"
}

Vukojević, V., Đurđić, S. Z., Ognjanović, M., Antić, B., Kalcher, K., Mutić, J.,& Stanković, D.. (2018). Supplementary material for the article: Vukojević, V.; Djurdjić, S.; Ognjanović, M.; Antić, B.; Kalcher, K.; Mutić, J.; Stanković, D.  M. RuO2/Graphene Nanoribbon Composite Supported on Screen Printed Electrode with  Enhanced Electrocatalytic Performances toward Ethanol and NADH Biosensing. Biosensors  and Bioelectronics 2018, 117, 392–397. https://doi.org/10.1016/j.bios.2018.06.038. in Biosensors and Bioelectronics
Elsevier Advanced Technology, Oxford..
https://hdl.handle.net/21.15107/rcub_cherry_2986

Vukojević V, Đurđić SZ, Ognjanović M, Antić B, Kalcher K, Mutić J, Stanković D. Supplementary material for the article: Vukojević, V.; Djurdjić, S.; Ognjanović, M.; Antić, B.; Kalcher, K.; Mutić, J.; Stanković, D.  M. RuO2/Graphene Nanoribbon Composite Supported on Screen Printed Electrode with  Enhanced Electrocatalytic Performances toward Ethanol and NADH Biosensing. Biosensors  and Bioelectronics 2018, 117, 392–397. https://doi.org/10.1016/j.bios.2018.06.038. in Biosensors and Bioelectronics. 2018;.
https://hdl.handle.net/21.15107/rcub_cherry_2986 .

Vukojević, Vesna, Đurđić, Slađana Z., Ognjanović, Miloš, Antić, Bratislav, Kalcher, Kurt, Mutić, Jelena, Stanković, Dalibor, "Supplementary material for the article: Vukojević, V.; Djurdjić, S.; Ognjanović, M.; Antić, B.; Kalcher, K.; Mutić, J.; Stanković, D.  M. RuO2/Graphene Nanoribbon Composite Supported on Screen Printed Electrode with  Enhanced Electrocatalytic Performances toward Ethanol and NADH Biosensing. Biosensors  and Bioelectronics 2018, 117, 392–397. https://doi.org/10.1016/j.bios.2018.06.038" in Biosensors and Bioelectronics (2018),
https://hdl.handle.net/21.15107/rcub_cherry_2986 .

TY  - JOUR
AU  - Vukojević, Vesna
AU  - Đurđić, Slađana Z.
AU  - Ognjanović, Miloš
AU  - Antić, Bratislav
AU  - Kalcher, Kurt
AU  - Mutić, Jelena
AU  - Stanković, Dalibor
PY  - 2018
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/2204
AB  - In this work, we aimed to propose a newly synthesized composite material with enhanced electrocatalytic properties as a novel screen-printed sensor for the quantification of NADH. Additionally, the surface was modified with alcohol dehydrogenase for the preparation of an amperometric biosensor for analysis of ethanol. Synthesized material was characterized using several microstructural (FE-SEM, HR-TEM, XRD) and electrochemical (CV, EIS) techniques. The electrochemical response of the tested analytes was investigated as a function of important parameters. Under optimal conditions, the working linear range and limit of detection for ethanol sensing was 1-1800 mu M and 0.19 mu M, respectively. For NADH, the linear range was from 1 to 1300 mu M with limit of detection of 0.52 mu M. Moreover, effects of some possible interfering compounds were investigated and the developed procedure was applied to commercial alcoholic beverages. The results obtained showed satisfactory precision and accuracy of the developed method and confirm the proposed approach could be a possible replacement for the currently used techniques for ethanol and NADH quantification.
PB  - Elsevier Advanced Technology, Oxford
T2  - Biosensors and Bioelectronics
T1  - RuO2/graphene nanoribbon composite supported on screen printed electrode with enhanced electrocatalytic performances toward ethanol and NADH biosensing
VL  - 117
SP  - 392
EP  - 397
DO  - 10.1016/j.bios.2018.06.038
ER  - 

@article{
author = "Vukojević, Vesna and Đurđić, Slađana Z. and Ognjanović, Miloš and Antić, Bratislav and Kalcher, Kurt and Mutić, Jelena and Stanković, Dalibor",
year = "2018",
abstract = "In this work, we aimed to propose a newly synthesized composite material with enhanced electrocatalytic properties as a novel screen-printed sensor for the quantification of NADH. Additionally, the surface was modified with alcohol dehydrogenase for the preparation of an amperometric biosensor for analysis of ethanol. Synthesized material was characterized using several microstructural (FE-SEM, HR-TEM, XRD) and electrochemical (CV, EIS) techniques. The electrochemical response of the tested analytes was investigated as a function of important parameters. Under optimal conditions, the working linear range and limit of detection for ethanol sensing was 1-1800 mu M and 0.19 mu M, respectively. For NADH, the linear range was from 1 to 1300 mu M with limit of detection of 0.52 mu M. Moreover, effects of some possible interfering compounds were investigated and the developed procedure was applied to commercial alcoholic beverages. The results obtained showed satisfactory precision and accuracy of the developed method and confirm the proposed approach could be a possible replacement for the currently used techniques for ethanol and NADH quantification.",
publisher = "Elsevier Advanced Technology, Oxford",
journal = "Biosensors and Bioelectronics",
title = "RuO2/graphene nanoribbon composite supported on screen printed electrode with enhanced electrocatalytic performances toward ethanol and NADH biosensing",
volume = "117",
pages = "392-397",
doi = "10.1016/j.bios.2018.06.038"
}

Vukojević, V., Đurđić, S. Z., Ognjanović, M., Antić, B., Kalcher, K., Mutić, J.,& Stanković, D.. (2018). RuO2/graphene nanoribbon composite supported on screen printed electrode with enhanced electrocatalytic performances toward ethanol and NADH biosensing. in Biosensors and Bioelectronics
Elsevier Advanced Technology, Oxford., 117, 392-397.
https://doi.org/10.1016/j.bios.2018.06.038

Vukojević V, Đurđić SZ, Ognjanović M, Antić B, Kalcher K, Mutić J, Stanković D. RuO2/graphene nanoribbon composite supported on screen printed electrode with enhanced electrocatalytic performances toward ethanol and NADH biosensing. in Biosensors and Bioelectronics. 2018;117:392-397.
doi:10.1016/j.bios.2018.06.038 .

Vukojević, Vesna, Đurđić, Slađana Z., Ognjanović, Miloš, Antić, Bratislav, Kalcher, Kurt, Mutić, Jelena, Stanković, Dalibor, "RuO2/graphene nanoribbon composite supported on screen printed electrode with enhanced electrocatalytic performances toward ethanol and NADH biosensing" in Biosensors and Bioelectronics, 117 (2018):392-397,
https://doi.org/10.1016/j.bios.2018.06.038 . .

TY  - JOUR
AU  - Vukojević, Vesna
AU  - Đurđić, Slađana Z.
AU  - Ognjanović, Miloš
AU  - Fabian, Martin
AU  - Samphao, Anchalee
AU  - Kalcher, Kurt
AU  - Stanković, Dalibor
PY  - 2018
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/2214
AB  - A disposable glucose biosensor was prepared using nanoparticles of MnO2 decorated on graphene nanoribbons by surface modification with drop coating with the GOx and Nafion (R). Tested material was synthesized and characterized using several techniques. The biosensor could be operated under physiological conditions (0.1 M phosphate buffer, pH 7.4) and exhibited good reproducibility and stability. The linear range for the amperometric response of the biosensor at operating potential of +0.50 (versus Ag/AgCl) was from 0.1 to 1.4 mmol/l, with a detection limit of 0.05 mmol/l and high sensitivity of 56.32 mu A/mmol cm(2). Developed method was tested toward glucose quantification in real samples with satisfactory accuracy and precision.
PB  - Elsevier Science Sa, Lausanne
T2  - Journal of Electroanalytical Chemistry
T1  - Enzymatic glucose biosensor based on manganese dioxide nanoparticles decorated on graphene nanoribbons
VL  - 823
SP  - 610
EP  - 616
DO  - 10.1016/j.jelechem.2018.07.013
ER  - 

@article{
author = "Vukojević, Vesna and Đurđić, Slađana Z. and Ognjanović, Miloš and Fabian, Martin and Samphao, Anchalee and Kalcher, Kurt and Stanković, Dalibor",
year = "2018",
abstract = "A disposable glucose biosensor was prepared using nanoparticles of MnO2 decorated on graphene nanoribbons by surface modification with drop coating with the GOx and Nafion (R). Tested material was synthesized and characterized using several techniques. The biosensor could be operated under physiological conditions (0.1 M phosphate buffer, pH 7.4) and exhibited good reproducibility and stability. The linear range for the amperometric response of the biosensor at operating potential of +0.50 (versus Ag/AgCl) was from 0.1 to 1.4 mmol/l, with a detection limit of 0.05 mmol/l and high sensitivity of 56.32 mu A/mmol cm(2). Developed method was tested toward glucose quantification in real samples with satisfactory accuracy and precision.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Journal of Electroanalytical Chemistry",
title = "Enzymatic glucose biosensor based on manganese dioxide nanoparticles decorated on graphene nanoribbons",
volume = "823",
pages = "610-616",
doi = "10.1016/j.jelechem.2018.07.013"
}

Vukojević, V., Đurđić, S. Z., Ognjanović, M., Fabian, M., Samphao, A., Kalcher, K.,& Stanković, D.. (2018). Enzymatic glucose biosensor based on manganese dioxide nanoparticles decorated on graphene nanoribbons. in Journal of Electroanalytical Chemistry
Elsevier Science Sa, Lausanne., 823, 610-616.
https://doi.org/10.1016/j.jelechem.2018.07.013

Vukojević V, Đurđić SZ, Ognjanović M, Fabian M, Samphao A, Kalcher K, Stanković D. Enzymatic glucose biosensor based on manganese dioxide nanoparticles decorated on graphene nanoribbons. in Journal of Electroanalytical Chemistry. 2018;823:610-616.
doi:10.1016/j.jelechem.2018.07.013 .

Vukojević, Vesna, Đurđić, Slađana Z., Ognjanović, Miloš, Fabian, Martin, Samphao, Anchalee, Kalcher, Kurt, Stanković, Dalibor, "Enzymatic glucose biosensor based on manganese dioxide nanoparticles decorated on graphene nanoribbons" in Journal of Electroanalytical Chemistry, 823 (2018):610-616,
https://doi.org/10.1016/j.jelechem.2018.07.013 . .

TY  - DATA
AU  - Mehmeti, Eda
AU  - Stanković, Dalibor
AU  - Ortner, Astrid
AU  - Zavašnik, Janez
AU  - Kalcher, Kurt
PY  - 2017
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/3036
PB  - Springer, New York
T2  - Food Analytical Methods
T1  - Supplementary data for article: Mehmeti, E.; Stanković, D. M.; Ortner, A.; Zavašnik, J.; Kalcher, K. Highly Selective Electrochemical Determination of Phlorizin Using Square Wave Voltammetry at a Boron-Doped Diamond Electrode. Food Analytical Methods 2017, 10 (11), 3747–3752. https://doi.org/10.1007/s12161-017-0935-x
UR  - https://hdl.handle.net/21.15107/rcub_cherry_3036
ER  - 

@misc{
author = "Mehmeti, Eda and Stanković, Dalibor and Ortner, Astrid and Zavašnik, Janez and Kalcher, Kurt",
year = "2017",
publisher = "Springer, New York",
journal = "Food Analytical Methods",
title = "Supplementary data for article: Mehmeti, E.; Stanković, D. M.; Ortner, A.; Zavašnik, J.; Kalcher, K. Highly Selective Electrochemical Determination of Phlorizin Using Square Wave Voltammetry at a Boron-Doped Diamond Electrode. Food Analytical Methods 2017, 10 (11), 3747–3752. https://doi.org/10.1007/s12161-017-0935-x",
url = "https://hdl.handle.net/21.15107/rcub_cherry_3036"
}

Mehmeti, E., Stanković, D., Ortner, A., Zavašnik, J.,& Kalcher, K.. (2017). Supplementary data for article: Mehmeti, E.; Stanković, D. M.; Ortner, A.; Zavašnik, J.; Kalcher, K. Highly Selective Electrochemical Determination of Phlorizin Using Square Wave Voltammetry at a Boron-Doped Diamond Electrode. Food Analytical Methods 2017, 10 (11), 3747–3752. https://doi.org/10.1007/s12161-017-0935-x. in Food Analytical Methods
Springer, New York..
https://hdl.handle.net/21.15107/rcub_cherry_3036

Mehmeti E, Stanković D, Ortner A, Zavašnik J, Kalcher K. Supplementary data for article: Mehmeti, E.; Stanković, D. M.; Ortner, A.; Zavašnik, J.; Kalcher, K. Highly Selective Electrochemical Determination of Phlorizin Using Square Wave Voltammetry at a Boron-Doped Diamond Electrode. Food Analytical Methods 2017, 10 (11), 3747–3752. https://doi.org/10.1007/s12161-017-0935-x. in Food Analytical Methods. 2017;.
https://hdl.handle.net/21.15107/rcub_cherry_3036 .

Mehmeti, Eda, Stanković, Dalibor, Ortner, Astrid, Zavašnik, Janez, Kalcher, Kurt, "Supplementary data for article: Mehmeti, E.; Stanković, D. M.; Ortner, A.; Zavašnik, J.; Kalcher, K. Highly Selective Electrochemical Determination of Phlorizin Using Square Wave Voltammetry at a Boron-Doped Diamond Electrode. Food Analytical Methods 2017, 10 (11), 3747–3752. https://doi.org/10.1007/s12161-017-0935-x" in Food Analytical Methods (2017),
https://hdl.handle.net/21.15107/rcub_cherry_3036 .

TY  - DATA
AU  - Mehmeti, Eda
AU  - Stanković, Dalibor
AU  - Chaiyo, Sudkate
AU  - Zavašnik, Janez
AU  - Žagar, Kristina
AU  - Kalcher, Kurt
PY  - 2017
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/3104
PB  - Springer Wien, Wien
T2  - Microchimica Acta
T1  - Supplementary data for article:           Mehmeti, E.; Stanković, D. M.; Chaiyo, S.; Zavasnik, J.; Žagar, K.; Kalcher, K. Wiring of Glucose Oxidase with Graphene Nanoribbons: An Electrochemical Third Generation Glucose Biosensor. Microchimica Acta 2017, 184 (4), 1127–1134. https://doi.org/10.1007/s00604-017-2115-5
UR  - https://hdl.handle.net/21.15107/rcub_cherry_3104
ER  - 

@misc{
author = "Mehmeti, Eda and Stanković, Dalibor and Chaiyo, Sudkate and Zavašnik, Janez and Žagar, Kristina and Kalcher, Kurt",
year = "2017",
publisher = "Springer Wien, Wien",
journal = "Microchimica Acta",
title = "Supplementary data for article:           Mehmeti, E.; Stanković, D. M.; Chaiyo, S.; Zavasnik, J.; Žagar, K.; Kalcher, K. Wiring of Glucose Oxidase with Graphene Nanoribbons: An Electrochemical Third Generation Glucose Biosensor. Microchimica Acta 2017, 184 (4), 1127–1134. https://doi.org/10.1007/s00604-017-2115-5",
url = "https://hdl.handle.net/21.15107/rcub_cherry_3104"
}

Mehmeti, E., Stanković, D., Chaiyo, S., Zavašnik, J., Žagar, K.,& Kalcher, K.. (2017). Supplementary data for article:           Mehmeti, E.; Stanković, D. M.; Chaiyo, S.; Zavasnik, J.; Žagar, K.; Kalcher, K. Wiring of Glucose Oxidase with Graphene Nanoribbons: An Electrochemical Third Generation Glucose Biosensor. Microchimica Acta 2017, 184 (4), 1127–1134. https://doi.org/10.1007/s00604-017-2115-5. in Microchimica Acta
Springer Wien, Wien..
https://hdl.handle.net/21.15107/rcub_cherry_3104

Mehmeti E, Stanković D, Chaiyo S, Zavašnik J, Žagar K, Kalcher K. Supplementary data for article:           Mehmeti, E.; Stanković, D. M.; Chaiyo, S.; Zavasnik, J.; Žagar, K.; Kalcher, K. Wiring of Glucose Oxidase with Graphene Nanoribbons: An Electrochemical Third Generation Glucose Biosensor. Microchimica Acta 2017, 184 (4), 1127–1134. https://doi.org/10.1007/s00604-017-2115-5. in Microchimica Acta. 2017;.
https://hdl.handle.net/21.15107/rcub_cherry_3104 .

Mehmeti, Eda, Stanković, Dalibor, Chaiyo, Sudkate, Zavašnik, Janez, Žagar, Kristina, Kalcher, Kurt, "Supplementary data for article:           Mehmeti, E.; Stanković, D. M.; Chaiyo, S.; Zavasnik, J.; Žagar, K.; Kalcher, K. Wiring of Glucose Oxidase with Graphene Nanoribbons: An Electrochemical Third Generation Glucose Biosensor. Microchimica Acta 2017, 184 (4), 1127–1134. https://doi.org/10.1007/s00604-017-2115-5" in Microchimica Acta (2017),
https://hdl.handle.net/21.15107/rcub_cherry_3104 .

TY  - JOUR
AU  - Mehmeti, Eda
AU  - Stanković, Dalibor
AU  - Kalcher, Kurt
PY  - 2017
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/2576
AB  - In this work a new electrochemical method will be presented for the determination of enalapril in pharmaceutical tablets using unmodified screen printed electrode (SPE). The studies were done using amperommetric detection. Enalapril provides well defined, ovalshape oxidation peak at +1.05 V (vs. Ag/AgCl, 3.0 M KCl) in Britton-Robinson buffer solution (BRBS) at pH 5.0. After optimization of the experimental conditions, the influence of most common interferent compounds was tested. Under optimized experimental conditions, the signals were linearly proportional to the concentration of enalapril in the range from 2.5 to 90 mu M with a detection limit of 0.9 mu M. Repeatability of ten replicate measurements of 5 mu M enalapril was estimated to be 1.5%. Proposed method was successfully applied for the determination of the total amount of enalapril content in pharmaceutical preparations. Nevertheless, proposed method could be beneficial for the quick quantifications of enalapril in drugs using unmodified SPE electrode without any further treatment.
PB  - Univ Tehran, Fac Chemistry, Center Excellence Electrochemistry, Tehran
T2  - Analytical and Bioanalytical Chemistry
T1  - Determination of Enalapril in Pharmaceuticals using Electrochemical Sensing with Amperometric Detection
VL  - 9
IS  - 8
SP  - 1000
EP  - 1007
UR  - https://hdl.handle.net/21.15107/rcub_cherry_2576
ER  - 

@article{
author = "Mehmeti, Eda and Stanković, Dalibor and Kalcher, Kurt",
year = "2017",
abstract = "In this work a new electrochemical method will be presented for the determination of enalapril in pharmaceutical tablets using unmodified screen printed electrode (SPE). The studies were done using amperommetric detection. Enalapril provides well defined, ovalshape oxidation peak at +1.05 V (vs. Ag/AgCl, 3.0 M KCl) in Britton-Robinson buffer solution (BRBS) at pH 5.0. After optimization of the experimental conditions, the influence of most common interferent compounds was tested. Under optimized experimental conditions, the signals were linearly proportional to the concentration of enalapril in the range from 2.5 to 90 mu M with a detection limit of 0.9 mu M. Repeatability of ten replicate measurements of 5 mu M enalapril was estimated to be 1.5%. Proposed method was successfully applied for the determination of the total amount of enalapril content in pharmaceutical preparations. Nevertheless, proposed method could be beneficial for the quick quantifications of enalapril in drugs using unmodified SPE electrode without any further treatment.",
publisher = "Univ Tehran, Fac Chemistry, Center Excellence Electrochemistry, Tehran",
journal = "Analytical and Bioanalytical Chemistry",
title = "Determination of Enalapril in Pharmaceuticals using Electrochemical Sensing with Amperometric Detection",
volume = "9",
number = "8",
pages = "1000-1007",
url = "https://hdl.handle.net/21.15107/rcub_cherry_2576"
}

Mehmeti, E., Stanković, D.,& Kalcher, K.. (2017). Determination of Enalapril in Pharmaceuticals using Electrochemical Sensing with Amperometric Detection. in Analytical and Bioanalytical Chemistry
Univ Tehran, Fac Chemistry, Center Excellence Electrochemistry, Tehran., 9(8), 1000-1007.
https://hdl.handle.net/21.15107/rcub_cherry_2576

Mehmeti E, Stanković D, Kalcher K. Determination of Enalapril in Pharmaceuticals using Electrochemical Sensing with Amperometric Detection. in Analytical and Bioanalytical Chemistry. 2017;9(8):1000-1007.
https://hdl.handle.net/21.15107/rcub_cherry_2576 .

Mehmeti, Eda, Stanković, Dalibor, Kalcher, Kurt, "Determination of Enalapril in Pharmaceuticals using Electrochemical Sensing with Amperometric Detection" in Analytical and Bioanalytical Chemistry, 9, no. 8 (2017):1000-1007,
https://hdl.handle.net/21.15107/rcub_cherry_2576 .

TY  - JOUR
AU  - Mehmeti, Eda
AU  - Stanković, Dalibor
AU  - Ortner, Astrid
AU  - Zavašnik, Janez
AU  - Kalcher, Kurt
PY  - 2017
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/2531
AB  - A boron-doped diamond electrode was used as an electrochemical sensor for the determination of phlorizin (aka phloridzin, phlorrhizin) using square wave voltammetry (SWV). Phlorizin (Phl) exhibited a well-defined oxidation peak at +0.9 V (versus Ag/AgCl electrode 3 M KCl) in solutions with a pH value of 6.0. Parameters such as pH value and scan rate were optimized for cyclic voltammetry as well as amplitude and frequency for SWV. The sensor gave excellent response with a wide linear dynamic range for concentrations of phlorizin from 3 to 100 mu M with a detection limit of 0.23 mu M and a good repeatability (+/- 0.9%, n = 7 measurements, c = 10 mu M). The effect of interferences by most common compounds was tested, and the method was successfully applied to the determination of the title compound in apple root extracts and urine samples with satisfactory recovery.
PB  - Springer, New York
T2  - Food Analytical Methods
T1  - Highly Selective Electrochemical Determination of Phlorizin Using Square Wave Voltammetry at a Boron-Doped Diamond Electrode
VL  - 10
IS  - 11
SP  - 3747
EP  - 3752
DO  - 10.1007/s12161-017-0935-x
ER  - 

@article{
author = "Mehmeti, Eda and Stanković, Dalibor and Ortner, Astrid and Zavašnik, Janez and Kalcher, Kurt",
year = "2017",
abstract = "A boron-doped diamond electrode was used as an electrochemical sensor for the determination of phlorizin (aka phloridzin, phlorrhizin) using square wave voltammetry (SWV). Phlorizin (Phl) exhibited a well-defined oxidation peak at +0.9 V (versus Ag/AgCl electrode 3 M KCl) in solutions with a pH value of 6.0. Parameters such as pH value and scan rate were optimized for cyclic voltammetry as well as amplitude and frequency for SWV. The sensor gave excellent response with a wide linear dynamic range for concentrations of phlorizin from 3 to 100 mu M with a detection limit of 0.23 mu M and a good repeatability (+/- 0.9%, n = 7 measurements, c = 10 mu M). The effect of interferences by most common compounds was tested, and the method was successfully applied to the determination of the title compound in apple root extracts and urine samples with satisfactory recovery.",
publisher = "Springer, New York",
journal = "Food Analytical Methods",
title = "Highly Selective Electrochemical Determination of Phlorizin Using Square Wave Voltammetry at a Boron-Doped Diamond Electrode",
volume = "10",
number = "11",
pages = "3747-3752",
doi = "10.1007/s12161-017-0935-x"
}

Mehmeti, E., Stanković, D., Ortner, A., Zavašnik, J.,& Kalcher, K.. (2017). Highly Selective Electrochemical Determination of Phlorizin Using Square Wave Voltammetry at a Boron-Doped Diamond Electrode. in Food Analytical Methods
Springer, New York., 10(11), 3747-3752.
https://doi.org/10.1007/s12161-017-0935-x

Mehmeti E, Stanković D, Ortner A, Zavašnik J, Kalcher K. Highly Selective Electrochemical Determination of Phlorizin Using Square Wave Voltammetry at a Boron-Doped Diamond Electrode. in Food Analytical Methods. 2017;10(11):3747-3752.
doi:10.1007/s12161-017-0935-x .

Mehmeti, Eda, Stanković, Dalibor, Ortner, Astrid, Zavašnik, Janez, Kalcher, Kurt, "Highly Selective Electrochemical Determination of Phlorizin Using Square Wave Voltammetry at a Boron-Doped Diamond Electrode" in Food Analytical Methods, 10, no. 11 (2017):3747-3752,
https://doi.org/10.1007/s12161-017-0935-x . .

TY  - JOUR
AU  - Mehmeti, Eda
AU  - Stanković, Dalibor
AU  - Chaiyo, Sudkate
AU  - Zavašnik, Janez
AU  - Zagar, Kristina
AU  - Kalcher, Kurt
PY  - 2017
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/2438
AB  - A reagentless third generation electrochemical glucose biosensor was fabricated based on wiring the template enzyme glucose oxidase (GOx) with graphene nanoribbons (GN) in order to create direct electron transfer between the co-factor (flavin adenine dinucleotide, FAD) and the electrode. The strategy involved: (i) isolation of the apo-enzyme by separating it from its co-enzyme; (ii) preparation of graphene nanoribbons (GN) by oxidative unzipping of multi-walled carbon nanotubes; (iii) adsorptive immobilization of GNs on the surface of a screen printed carbon electrode (SPCE); (iv) covalent attachment of FAD to the nanoribbons; (v) recombination of the apo-enzyme with the covalently bound FAD to the holoenzyme; and (vi) stabilization of the bio-layer with a thin membrane of Nafion. The biosensor (referred to as GN/FAD/apo-GOx/Nafion/SPCE) is operated at a potential of +0.475 V vs Ag/AgCl/{3 M KCl} in flow-injection mode with an oxygen-free phosphate buffer (pH 7.5) acting as a carrier. The signals are linearly proportional to the concentration of glucose in the range from 50 to 2000 mgai...L-1 with a detection limit of 20 mgai...L-1. The repeatability (10 measurements, at 1000 mgai...L-1 glucose) is +/- 1.4% and the reproducibility (5 sensors, 1000 mgai...L-1 glucose) is +/- 1.8%. The biosensor was applied to the determination of glucose in human serum.
PB  - Springer Wien, Wien
T2  - Microchimica Acta
T1  - Wiring of glucose oxidase with graphene nanoribbons: an electrochemical third generation glucose biosensor
VL  - 184
IS  - 4
SP  - 1127
EP  - 1134
DO  - 10.1007/s00604-017-2115-5
ER  - 

@article{
author = "Mehmeti, Eda and Stanković, Dalibor and Chaiyo, Sudkate and Zavašnik, Janez and Zagar, Kristina and Kalcher, Kurt",
year = "2017",
abstract = "A reagentless third generation electrochemical glucose biosensor was fabricated based on wiring the template enzyme glucose oxidase (GOx) with graphene nanoribbons (GN) in order to create direct electron transfer between the co-factor (flavin adenine dinucleotide, FAD) and the electrode. The strategy involved: (i) isolation of the apo-enzyme by separating it from its co-enzyme; (ii) preparation of graphene nanoribbons (GN) by oxidative unzipping of multi-walled carbon nanotubes; (iii) adsorptive immobilization of GNs on the surface of a screen printed carbon electrode (SPCE); (iv) covalent attachment of FAD to the nanoribbons; (v) recombination of the apo-enzyme with the covalently bound FAD to the holoenzyme; and (vi) stabilization of the bio-layer with a thin membrane of Nafion. The biosensor (referred to as GN/FAD/apo-GOx/Nafion/SPCE) is operated at a potential of +0.475 V vs Ag/AgCl/{3 M KCl} in flow-injection mode with an oxygen-free phosphate buffer (pH 7.5) acting as a carrier. The signals are linearly proportional to the concentration of glucose in the range from 50 to 2000 mgai...L-1 with a detection limit of 20 mgai...L-1. The repeatability (10 measurements, at 1000 mgai...L-1 glucose) is +/- 1.4% and the reproducibility (5 sensors, 1000 mgai...L-1 glucose) is +/- 1.8%. The biosensor was applied to the determination of glucose in human serum.",
publisher = "Springer Wien, Wien",
journal = "Microchimica Acta",
title = "Wiring of glucose oxidase with graphene nanoribbons: an electrochemical third generation glucose biosensor",
volume = "184",
number = "4",
pages = "1127-1134",
doi = "10.1007/s00604-017-2115-5"
}

Mehmeti, E., Stanković, D., Chaiyo, S., Zavašnik, J., Zagar, K.,& Kalcher, K.. (2017). Wiring of glucose oxidase with graphene nanoribbons: an electrochemical third generation glucose biosensor. in Microchimica Acta
Springer Wien, Wien., 184(4), 1127-1134.
https://doi.org/10.1007/s00604-017-2115-5

Mehmeti E, Stanković D, Chaiyo S, Zavašnik J, Zagar K, Kalcher K. Wiring of glucose oxidase with graphene nanoribbons: an electrochemical third generation glucose biosensor. in Microchimica Acta. 2017;184(4):1127-1134.
doi:10.1007/s00604-017-2115-5 .

Mehmeti, Eda, Stanković, Dalibor, Chaiyo, Sudkate, Zavašnik, Janez, Zagar, Kristina, Kalcher, Kurt, "Wiring of glucose oxidase with graphene nanoribbons: an electrochemical third generation glucose biosensor" in Microchimica Acta, 184, no. 4 (2017):1127-1134,
https://doi.org/10.1007/s00604-017-2115-5 . .

TY  - JOUR
AU  - Stanković, Dalibor
AU  - Šovrc, Ľubomír
AU  - Mariano, Jose F. M. L.
AU  - Ortner, Astrid
AU  - Kalcher, Kurt
PY  - 2017
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/2534
AB  - Colchicine (COLC) is a natural toxic product and secondary metabolite most commonly used to treat gout. In this study, its electrochemical behavior and determination was investigated by employing modification-free boron-doped diamond electrode (BDDE). Besides, its interaction with DNA was monitored using electrochemical methods. It was found that oxidation of this compound proceeds in two steps, where first sharp and well defined oxidation peak occurs at potential of around 1.19V, and second one at around 1.37V, in Britton-Robinson buffer solution at pH7.5. Wide dynamic range from 1 to 100 mu M was obtained with a detection limit (3 sigma(intercept)/slope) of a 0.26 mu M, based on the evaluation of first oxidation peak using differential pulse voltammetry. The proposed method was also found to be suitable for monitoring interaction of this drug with DNA as important segment for medical use. Concerning the validation, the analytical procedure shows excellent selectivity and sensitivity toward COLC detection and after method development it was successfully used for its quantification in pharmaceutical preparation and human serum sample, with satisfactory recovery. Obviously, this approach can be promising replacement for time-consuming and expensive separation methods.
PB  - Wiley-V C H Verlag Gmbh, Weinheim
T2  - Electroanalysis
T1  - Electrochemical Determination of Natural Drug Colchicine in Pharmaceuticals and Human Serum Sample and its Interaction with DNA
VL  - 29
IS  - 10
SP  - 2276
EP  - 2281
DO  - 10.1002/elan.201700233
ER  - 

@article{
author = "Stanković, Dalibor and Šovrc, Ľubomír and Mariano, Jose F. M. L. and Ortner, Astrid and Kalcher, Kurt",
year = "2017",
abstract = "Colchicine (COLC) is a natural toxic product and secondary metabolite most commonly used to treat gout. In this study, its electrochemical behavior and determination was investigated by employing modification-free boron-doped diamond electrode (BDDE). Besides, its interaction with DNA was monitored using electrochemical methods. It was found that oxidation of this compound proceeds in two steps, where first sharp and well defined oxidation peak occurs at potential of around 1.19V, and second one at around 1.37V, in Britton-Robinson buffer solution at pH7.5. Wide dynamic range from 1 to 100 mu M was obtained with a detection limit (3 sigma(intercept)/slope) of a 0.26 mu M, based on the evaluation of first oxidation peak using differential pulse voltammetry. The proposed method was also found to be suitable for monitoring interaction of this drug with DNA as important segment for medical use. Concerning the validation, the analytical procedure shows excellent selectivity and sensitivity toward COLC detection and after method development it was successfully used for its quantification in pharmaceutical preparation and human serum sample, with satisfactory recovery. Obviously, this approach can be promising replacement for time-consuming and expensive separation methods.",
publisher = "Wiley-V C H Verlag Gmbh, Weinheim",
journal = "Electroanalysis",
title = "Electrochemical Determination of Natural Drug Colchicine in Pharmaceuticals and Human Serum Sample and its Interaction with DNA",
volume = "29",
number = "10",
pages = "2276-2281",
doi = "10.1002/elan.201700233"
}

Stanković, D., Šovrc, Ľ., Mariano, J. F. M. L., Ortner, A.,& Kalcher, K.. (2017). Electrochemical Determination of Natural Drug Colchicine in Pharmaceuticals and Human Serum Sample and its Interaction with DNA. in Electroanalysis
Wiley-V C H Verlag Gmbh, Weinheim., 29(10), 2276-2281.
https://doi.org/10.1002/elan.201700233

Stanković D, Šovrc Ľ, Mariano JFML, Ortner A, Kalcher K. Electrochemical Determination of Natural Drug Colchicine in Pharmaceuticals and Human Serum Sample and its Interaction with DNA. in Electroanalysis. 2017;29(10):2276-2281.
doi:10.1002/elan.201700233 .

Stanković, Dalibor, Šovrc, Ľubomír, Mariano, Jose F. M. L., Ortner, Astrid, Kalcher, Kurt, "Electrochemical Determination of Natural Drug Colchicine in Pharmaceuticals and Human Serum Sample and its Interaction with DNA" in Electroanalysis, 29, no. 10 (2017):2276-2281,
https://doi.org/10.1002/elan.201700233 . .