TY  - JOUR
AU  - Jovanović, Tamara
AU  - Koruga, Đuro
AU  - Jovančićević, Branimir
PY  - 2017
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/2447
AB  - The FT-IR spectra of the stable C-76 and C-84 isomers of D-2 symmetry, isolated by the new, advanced extraction and chromatographic methods and processes, were recorded by the KBr technique, over the relevant region from400 to 2000 cm(-1), at room temperature. All the observed infrared bands are in excellent agreement with the semiempirical QCFF/PI, DFT, and TB potential calculations for these fullerenes, which is presented in this article, as the evidence of their validity. The molar absorptivity epsilon and the integrated molar absorptivity psi of their IR absorption bands were determined and reported together with the relative intensities. Excellent agreement is found between the relative intensities of the main and characteristic absorption maxima calculated from epsilon(lambda) and from the psi(lambda) values in adequate integration ranges. These results are significant for the identification and quantitative determination of the C-76-D-2 and C-84-D-2:22 fullerenes, either in natural resources on Earth and in space or in artificially synthesized and biomaterials, electronic, optical, and biomedical devices, sensors, polymers, optical limiters, solar cells, organic field effect transistors, special lenses, diagnostic and therapeutic agents, pharmaceutical substances in biomedical engineering, and so forth.
PB  - Hindawi Ltd, London
T2  - Journal of Nanomaterials
T1  - The IR Spectra, Molar Absorptivity, and Integrated Molar Absorptivity of the C76-D2 and C-84-D-2:22 Isomers
DO  - 10.1155/2017/4360746
ER  - 

@article{
author = "Jovanović, Tamara and Koruga, Đuro and Jovančićević, Branimir",
year = "2017",
abstract = "The FT-IR spectra of the stable C-76 and C-84 isomers of D-2 symmetry, isolated by the new, advanced extraction and chromatographic methods and processes, were recorded by the KBr technique, over the relevant region from400 to 2000 cm(-1), at room temperature. All the observed infrared bands are in excellent agreement with the semiempirical QCFF/PI, DFT, and TB potential calculations for these fullerenes, which is presented in this article, as the evidence of their validity. The molar absorptivity epsilon and the integrated molar absorptivity psi of their IR absorption bands were determined and reported together with the relative intensities. Excellent agreement is found between the relative intensities of the main and characteristic absorption maxima calculated from epsilon(lambda) and from the psi(lambda) values in adequate integration ranges. These results are significant for the identification and quantitative determination of the C-76-D-2 and C-84-D-2:22 fullerenes, either in natural resources on Earth and in space or in artificially synthesized and biomaterials, electronic, optical, and biomedical devices, sensors, polymers, optical limiters, solar cells, organic field effect transistors, special lenses, diagnostic and therapeutic agents, pharmaceutical substances in biomedical engineering, and so forth.",
publisher = "Hindawi Ltd, London",
journal = "Journal of Nanomaterials",
title = "The IR Spectra, Molar Absorptivity, and Integrated Molar Absorptivity of the C76-D2 and C-84-D-2:22 Isomers",
doi = "10.1155/2017/4360746"
}

Jovanović, T., Koruga, Đ.,& Jovančićević, B.. (2017). The IR Spectra, Molar Absorptivity, and Integrated Molar Absorptivity of the C76-D2 and C-84-D-2:22 Isomers. in Journal of Nanomaterials
Hindawi Ltd, London..
https://doi.org/10.1155/2017/4360746

Jovanović T, Koruga Đ, Jovančićević B. The IR Spectra, Molar Absorptivity, and Integrated Molar Absorptivity of the C76-D2 and C-84-D-2:22 Isomers. in Journal of Nanomaterials. 2017;.
doi:10.1155/2017/4360746 .

Jovanović, Tamara, Koruga, Đuro, Jovančićević, Branimir, "The IR Spectra, Molar Absorptivity, and Integrated Molar Absorptivity of the C76-D2 and C-84-D-2:22 Isomers" in Journal of Nanomaterials (2017),
https://doi.org/10.1155/2017/4360746 . .

TY  - JOUR
AU  - Jovanović, Tamara
AU  - Koruga, Đuro
AU  - Jovančićević, Branimir
PY  - 2014
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/1893
AB  - The stable isomers of the higher fullerenes C-76 and C-84 with D-2 symmetry as well as the basic fullerenes C-60 and C-70 were isolated from carbon soot and characterized by the new and advanced methods, techniques, and processes. The validity of several semiempirical, ab initio, and DFT theoretical calculations in predicting the general pattern of IR absorption and the vibrational frequencies, as well as the molecular electronic structure of the C-76 and C-84 isomers of D-2 symmetry, is confirmed, based on recent experimental results. An excellent correlation was found between the previously reported theoretical data and the recently obtained experimental results for these molecules over the relevant spectral range for the identification of fullerenes. These results indicate that there are no errors in the calculations in the significant spectral regions, the assumptions that were based on previous comparisons with partial experimental results. Isolated fullerenes are important for their applications in electronic and optical devices, solar cells, optical limiting, sensors, polymers, nanophotonic materials, diagnostic and therapeutic agents, health and environment protection, and so forth.
PB  - Hindawi Publishing Corporation, New York
T2  - Journal of Nanomaterials
T1  - Recent Advances in IR and UV/VIS Spectroscopic Characterization of the C-76 and C-84 Isomers of D-2 Symmetry
DO  - 10.1155/2014/701312
ER  - 

@article{
author = "Jovanović, Tamara and Koruga, Đuro and Jovančićević, Branimir",
year = "2014",
abstract = "The stable isomers of the higher fullerenes C-76 and C-84 with D-2 symmetry as well as the basic fullerenes C-60 and C-70 were isolated from carbon soot and characterized by the new and advanced methods, techniques, and processes. The validity of several semiempirical, ab initio, and DFT theoretical calculations in predicting the general pattern of IR absorption and the vibrational frequencies, as well as the molecular electronic structure of the C-76 and C-84 isomers of D-2 symmetry, is confirmed, based on recent experimental results. An excellent correlation was found between the previously reported theoretical data and the recently obtained experimental results for these molecules over the relevant spectral range for the identification of fullerenes. These results indicate that there are no errors in the calculations in the significant spectral regions, the assumptions that were based on previous comparisons with partial experimental results. Isolated fullerenes are important for their applications in electronic and optical devices, solar cells, optical limiting, sensors, polymers, nanophotonic materials, diagnostic and therapeutic agents, health and environment protection, and so forth.",
publisher = "Hindawi Publishing Corporation, New York",
journal = "Journal of Nanomaterials",
title = "Recent Advances in IR and UV/VIS Spectroscopic Characterization of the C-76 and C-84 Isomers of D-2 Symmetry",
doi = "10.1155/2014/701312"
}

Jovanović, T., Koruga, Đ.,& Jovančićević, B.. (2014). Recent Advances in IR and UV/VIS Spectroscopic Characterization of the C-76 and C-84 Isomers of D-2 Symmetry. in Journal of Nanomaterials
Hindawi Publishing Corporation, New York..
https://doi.org/10.1155/2014/701312

Jovanović T, Koruga Đ, Jovančićević B. Recent Advances in IR and UV/VIS Spectroscopic Characterization of the C-76 and C-84 Isomers of D-2 Symmetry. in Journal of Nanomaterials. 2014;.
doi:10.1155/2014/701312 .

Jovanović, Tamara, Koruga, Đuro, Jovančićević, Branimir, "Recent Advances in IR and UV/VIS Spectroscopic Characterization of the C-76 and C-84 Isomers of D-2 Symmetry" in Journal of Nanomaterials (2014),
https://doi.org/10.1155/2014/701312 . .

TY  - JOUR
AU  - Jovanović, Tamara
AU  - Koruga, Đuro
AU  - Jovančićević, Branimir
PY  - 2014
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/1769
AB  - The validity of semi-empirical and DFT theoretical calculations in predicting the general pattern of IR absorption and vibrational frequencies, as well as the molecular structure of the C-84 isomer of D-2 symmetry is confirmed, based IT recent experimental results. An excellent correlation was found between the previously reported theoretical data and the recently obtained experimental results for this molecule over the relevant spectral range for the identification of fullerenes. These results indicate that there is no error in the calculations in the significant infrared region, an assumption that was based on a previous comparison with partial experimental results. (C) 2014 Elsevier B.V. All rights reserved.
PB  - Elsevier Science Sa, Lausanne
T2  - Diamond and Related Materials
T1  - The electronic structure and vibrational frequencies of the stable C-84 isomer of D-2 symmetry: theory and experiment
VL  - 44
SP  - 44
EP  - 48
DO  - 10.1016/j.diamond.2014.02.004
ER  - 

@article{
author = "Jovanović, Tamara and Koruga, Đuro and Jovančićević, Branimir",
year = "2014",
abstract = "The validity of semi-empirical and DFT theoretical calculations in predicting the general pattern of IR absorption and vibrational frequencies, as well as the molecular structure of the C-84 isomer of D-2 symmetry is confirmed, based IT recent experimental results. An excellent correlation was found between the previously reported theoretical data and the recently obtained experimental results for this molecule over the relevant spectral range for the identification of fullerenes. These results indicate that there is no error in the calculations in the significant infrared region, an assumption that was based on a previous comparison with partial experimental results. (C) 2014 Elsevier B.V. All rights reserved.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Diamond and Related Materials",
title = "The electronic structure and vibrational frequencies of the stable C-84 isomer of D-2 symmetry: theory and experiment",
volume = "44",
pages = "44-48",
doi = "10.1016/j.diamond.2014.02.004"
}

Jovanović, T., Koruga, Đ.,& Jovančićević, B.. (2014). The electronic structure and vibrational frequencies of the stable C-84 isomer of D-2 symmetry: theory and experiment. in Diamond and Related Materials
Elsevier Science Sa, Lausanne., 44, 44-48.
https://doi.org/10.1016/j.diamond.2014.02.004

Jovanović T, Koruga Đ, Jovančićević B. The electronic structure and vibrational frequencies of the stable C-84 isomer of D-2 symmetry: theory and experiment. in Diamond and Related Materials. 2014;44:44-48.
doi:10.1016/j.diamond.2014.02.004 .

Jovanović, Tamara, Koruga, Đuro, Jovančićević, Branimir, "The electronic structure and vibrational frequencies of the stable C-84 isomer of D-2 symmetry: theory and experiment" in Diamond and Related Materials, 44 (2014):44-48,
https://doi.org/10.1016/j.diamond.2014.02.004 . .

TY  - JOUR
AU  - Jovanović, Tamara
AU  - Koruga, Đuro
AU  - Jovančićević, Branimir
PY  - 2014
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/1501
AB  - The basic C-60 and C-70, and the higher fullerenes, mainly C-76 and C-84 were extracted with a series of different and previously unapplied solvents or combinations of solvents, by original advanced procedures, from the samples of carbon soot, produced in electric arc. The solubility of the basic and the higher fullerenes in the applied series of solvents was compared. Chromatographic separations of fullerenes from the obtained extracts were performed by continue elution, in one phase of each process, under atmospheric pressure, with the original, defined gradients of solvents, from pure hexane or 5% toluene in hexane to pure toluene, on active Al2O3 columns, by the new, improved methods. Identifications of fullerenes in all the chromatographically purified fractions and the extracts were performed using determined techniques of IR and UV/VIS spectroscopy that have not been presented previously for the higher fullerenes. The advances in chromatographic purification using alumina, as well as in understanding of the unique and the main optical absorption properties of these molecules are reported.
PB  - Taylor & Francis Inc, Philadelphia
T2  - Fullerenes Nanotubes and Carbon Nanostructures
T1  - Advances in Chromatographic Separation on Al2O3 and Spectroscopic Characterization of the Higher Fullerenes
VL  - 22
IS  - 4
SP  - 384
EP  - 396
DO  - 10.1080/1536383X.2012.690461
ER  - 

@article{
author = "Jovanović, Tamara and Koruga, Đuro and Jovančićević, Branimir",
year = "2014",
abstract = "The basic C-60 and C-70, and the higher fullerenes, mainly C-76 and C-84 were extracted with a series of different and previously unapplied solvents or combinations of solvents, by original advanced procedures, from the samples of carbon soot, produced in electric arc. The solubility of the basic and the higher fullerenes in the applied series of solvents was compared. Chromatographic separations of fullerenes from the obtained extracts were performed by continue elution, in one phase of each process, under atmospheric pressure, with the original, defined gradients of solvents, from pure hexane or 5% toluene in hexane to pure toluene, on active Al2O3 columns, by the new, improved methods. Identifications of fullerenes in all the chromatographically purified fractions and the extracts were performed using determined techniques of IR and UV/VIS spectroscopy that have not been presented previously for the higher fullerenes. The advances in chromatographic purification using alumina, as well as in understanding of the unique and the main optical absorption properties of these molecules are reported.",
publisher = "Taylor & Francis Inc, Philadelphia",
journal = "Fullerenes Nanotubes and Carbon Nanostructures",
title = "Advances in Chromatographic Separation on Al2O3 and Spectroscopic Characterization of the Higher Fullerenes",
volume = "22",
number = "4",
pages = "384-396",
doi = "10.1080/1536383X.2012.690461"
}

Jovanović, T., Koruga, Đ.,& Jovančićević, B.. (2014). Advances in Chromatographic Separation on Al2O3 and Spectroscopic Characterization of the Higher Fullerenes. in Fullerenes Nanotubes and Carbon Nanostructures
Taylor & Francis Inc, Philadelphia., 22(4), 384-396.
https://doi.org/10.1080/1536383X.2012.690461

Jovanović T, Koruga Đ, Jovančićević B. Advances in Chromatographic Separation on Al2O3 and Spectroscopic Characterization of the Higher Fullerenes. in Fullerenes Nanotubes and Carbon Nanostructures. 2014;22(4):384-396.
doi:10.1080/1536383X.2012.690461 .

Jovanović, Tamara, Koruga, Đuro, Jovančićević, Branimir, "Advances in Chromatographic Separation on Al2O3 and Spectroscopic Characterization of the Higher Fullerenes" in Fullerenes Nanotubes and Carbon Nanostructures, 22, no. 4 (2014):384-396,
https://doi.org/10.1080/1536383X.2012.690461 . .

TY  - JOUR
AU  - Jovanović, Tamara
AU  - Koruga, Đuro
AU  - Jovančićević, Branimir
AU  - Vajs, Vlatka
AU  - Devic, G.
PY  - 2013
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/1536
AB  - The basic C-60 and C-70, and the higher fullerenes, mainly C-76 and C-84, were extracted by original procedures, with p-xylene and the mixture of xylenes from the samples of initial carbon soot, produced in electrical arc. The extracts were obtained in increased and high yields of 6% and 11.9%, respectively, due to application of the advanced procedures. The solubility of fullerenes in these solvents was compared. Chromatographic separation of the basic and the higher fullerenes from the obtained p-xylene extract was performed by continue elution, in one phase of the process, under atmospheric pressure, with original, defined gradient of solvents, from pure hexane to 75% toluene in hexane, on active Al2O3 column, by a new, improved method. Comparative spectroscopic characterization of the obtained purified fullerene fractions and the extracts is reported. The IR and UV/VIS techniques that have not been presented previously for the higher fullerenes were employed as a contribution to better introduction of their optical absorption properties.
PB  - Taylor & Francis Inc, Philadelphia
T2  - Fullerenes Nanotubes and Carbon Nanostructures
T1  - Comparative Spectroscopic Characterization of the Basic and the Higher Fullerenes
VL  - 21
IS  - 1
SP  - 64
EP  - 74
DO  - 10.1080/1536383X.2011.588812
ER  - 

@article{
author = "Jovanović, Tamara and Koruga, Đuro and Jovančićević, Branimir and Vajs, Vlatka and Devic, G.",
year = "2013",
abstract = "The basic C-60 and C-70, and the higher fullerenes, mainly C-76 and C-84, were extracted by original procedures, with p-xylene and the mixture of xylenes from the samples of initial carbon soot, produced in electrical arc. The extracts were obtained in increased and high yields of 6% and 11.9%, respectively, due to application of the advanced procedures. The solubility of fullerenes in these solvents was compared. Chromatographic separation of the basic and the higher fullerenes from the obtained p-xylene extract was performed by continue elution, in one phase of the process, under atmospheric pressure, with original, defined gradient of solvents, from pure hexane to 75% toluene in hexane, on active Al2O3 column, by a new, improved method. Comparative spectroscopic characterization of the obtained purified fullerene fractions and the extracts is reported. The IR and UV/VIS techniques that have not been presented previously for the higher fullerenes were employed as a contribution to better introduction of their optical absorption properties.",
publisher = "Taylor & Francis Inc, Philadelphia",
journal = "Fullerenes Nanotubes and Carbon Nanostructures",
title = "Comparative Spectroscopic Characterization of the Basic and the Higher Fullerenes",
volume = "21",
number = "1",
pages = "64-74",
doi = "10.1080/1536383X.2011.588812"
}

Jovanović, T., Koruga, Đ., Jovančićević, B., Vajs, V.,& Devic, G.. (2013). Comparative Spectroscopic Characterization of the Basic and the Higher Fullerenes. in Fullerenes Nanotubes and Carbon Nanostructures
Taylor & Francis Inc, Philadelphia., 21(1), 64-74.
https://doi.org/10.1080/1536383X.2011.588812

Jovanović T, Koruga Đ, Jovančićević B, Vajs V, Devic G. Comparative Spectroscopic Characterization of the Basic and the Higher Fullerenes. in Fullerenes Nanotubes and Carbon Nanostructures. 2013;21(1):64-74.
doi:10.1080/1536383X.2011.588812 .

Jovanović, Tamara, Koruga, Đuro, Jovančićević, Branimir, Vajs, Vlatka, Devic, G., "Comparative Spectroscopic Characterization of the Basic and the Higher Fullerenes" in Fullerenes Nanotubes and Carbon Nanostructures, 21, no. 1 (2013):64-74,
https://doi.org/10.1080/1536383X.2011.588812 . .

TY  - JOUR
AU  - Jovanović, Tamara
AU  - Koruga, Đuro
AU  - Jovančićević, Branimir
PY  - 2011
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/1166
AB  - In the first phase of the process, the higher fullerenes, mainly C(76) and C(84), as well as the basic fullerenes C(60) and C(70), in a smaller amount, were Soxhlet extracted with pyridine from the sample of initial carbon soot, produced in electrical arc. The extract was obtained in increased, high yield of 16.4%, due to application of the original procedure. The solubility of fullerenes in this solvent was determined. Chromatographic separation of fullerenes from pyridine extract was performed by continual elution, in one phase of the process, under atmospheric pressure, with original, defined gradient of solvents, from pure hexane to pure toluene, on active Al(2)O(3) column, by a new, improved method. Identifications of fullerenes in the obtained chromatographically purified fractions and pyridine extract of the initial soot were performed using determined IR and UV/VIS techniques that have not been presented previously for the higher fullerenes.
PB  - Taylor & Francis Inc, Philadelphia
T2  - Fullerenes Nanotubes and Carbon Nanostructures
T1  - Isolation and Characterization of the Higher Fullerenes from Carbon Soot
VL  - 19
IS  - 4
SP  - 309
EP  - 316
DO  - 10.1080/15363831003721872
ER  - 

@article{
author = "Jovanović, Tamara and Koruga, Đuro and Jovančićević, Branimir",
year = "2011",
abstract = "In the first phase of the process, the higher fullerenes, mainly C(76) and C(84), as well as the basic fullerenes C(60) and C(70), in a smaller amount, were Soxhlet extracted with pyridine from the sample of initial carbon soot, produced in electrical arc. The extract was obtained in increased, high yield of 16.4%, due to application of the original procedure. The solubility of fullerenes in this solvent was determined. Chromatographic separation of fullerenes from pyridine extract was performed by continual elution, in one phase of the process, under atmospheric pressure, with original, defined gradient of solvents, from pure hexane to pure toluene, on active Al(2)O(3) column, by a new, improved method. Identifications of fullerenes in the obtained chromatographically purified fractions and pyridine extract of the initial soot were performed using determined IR and UV/VIS techniques that have not been presented previously for the higher fullerenes.",
publisher = "Taylor & Francis Inc, Philadelphia",
journal = "Fullerenes Nanotubes and Carbon Nanostructures",
title = "Isolation and Characterization of the Higher Fullerenes from Carbon Soot",
volume = "19",
number = "4",
pages = "309-316",
doi = "10.1080/15363831003721872"
}

Jovanović, T., Koruga, Đ.,& Jovančićević, B.. (2011). Isolation and Characterization of the Higher Fullerenes from Carbon Soot. in Fullerenes Nanotubes and Carbon Nanostructures
Taylor & Francis Inc, Philadelphia., 19(4), 309-316.
https://doi.org/10.1080/15363831003721872

Jovanović T, Koruga Đ, Jovančićević B. Isolation and Characterization of the Higher Fullerenes from Carbon Soot. in Fullerenes Nanotubes and Carbon Nanostructures. 2011;19(4):309-316.
doi:10.1080/15363831003721872 .

Jovanović, Tamara, Koruga, Đuro, Jovančićević, Branimir, "Isolation and Characterization of the Higher Fullerenes from Carbon Soot" in Fullerenes Nanotubes and Carbon Nanostructures, 19, no. 4 (2011):309-316,
https://doi.org/10.1080/15363831003721872 . .