TY  - JOUR
AU  - Mišović, Aleksandra
AU  - Bajuk Bogdanović, Danica
AU  - Kepić, Dejan
AU  - Pavlović, Vladimir
AU  - Huskić, Miroslav
AU  - Hasheminejad, Navid
AU  - Vuye, Cedric
AU  - Zorić, Nemanja
AU  - Jovanović, Svetlana
PY  - 2022
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/6002
AB  - The need for stable, chemical resistant and conductive materials is on the rise in recent times. Graphene shows promising electrical conductivity and chemical stability, but the production of a continual, conductive layer is limited and expensive. Silver nanowires (AgNWs) are both conducive and economically viable, but they are sensitive to water and oxygen. In this study, graphene oxide (GO) and AgNWs were synthesized and combined in different mass ratios (3:1, 2.5:1.5, and 1:1) to obtain chemically stable composites with improved electrical properties. Composites were reduced using ascorbic acid. With the increase of AgNWs to GO mass ratio, the surface of the free-standing composite film improved: the root mean square roughness was lowered from 376 nm for GO to 168 nm for the composite with the mass ratio of GO:AgNWs 1:1, while the sheet resistance was lowered from 146 × 106 Ω/□ to 4 Ω/□. For the first time, the effects of gamma irradiation on the structure of the composites were studied. Doses of 15, 25, and 35 kGy were applied.
PB  - Elsevier Ltd
T2  - Synthetic Metals
T1  - Properties of free-standing graphene oxide/silver nanowires films and effects of chemical reduction and gamma irradiation
SP  - 116980
VL  - 283
DO  - 10.1016/j.synthmet.2021.116980
ER  - 

@article{
author = "Mišović, Aleksandra and Bajuk Bogdanović, Danica and Kepić, Dejan and Pavlović, Vladimir and Huskić, Miroslav and Hasheminejad, Navid and Vuye, Cedric and Zorić, Nemanja and Jovanović, Svetlana",
year = "2022",
abstract = "The need for stable, chemical resistant and conductive materials is on the rise in recent times. Graphene shows promising electrical conductivity and chemical stability, but the production of a continual, conductive layer is limited and expensive. Silver nanowires (AgNWs) are both conducive and economically viable, but they are sensitive to water and oxygen. In this study, graphene oxide (GO) and AgNWs were synthesized and combined in different mass ratios (3:1, 2.5:1.5, and 1:1) to obtain chemically stable composites with improved electrical properties. Composites were reduced using ascorbic acid. With the increase of AgNWs to GO mass ratio, the surface of the free-standing composite film improved: the root mean square roughness was lowered from 376 nm for GO to 168 nm for the composite with the mass ratio of GO:AgNWs 1:1, while the sheet resistance was lowered from 146 × 106 Ω/□ to 4 Ω/□. For the first time, the effects of gamma irradiation on the structure of the composites were studied. Doses of 15, 25, and 35 kGy were applied.",
publisher = "Elsevier Ltd",
journal = "Synthetic Metals",
title = "Properties of free-standing graphene oxide/silver nanowires films and effects of chemical reduction and gamma irradiation",
pages = "116980",
volume = "283",
doi = "10.1016/j.synthmet.2021.116980"
}

Mišović, A., Bajuk Bogdanović, D., Kepić, D., Pavlović, V., Huskić, M., Hasheminejad, N., Vuye, C., Zorić, N.,& Jovanović, S.. (2022). Properties of free-standing graphene oxide/silver nanowires films and effects of chemical reduction and gamma irradiation. in Synthetic Metals
Elsevier Ltd., 283, 116980.
https://doi.org/10.1016/j.synthmet.2021.116980

Mišović A, Bajuk Bogdanović D, Kepić D, Pavlović V, Huskić M, Hasheminejad N, Vuye C, Zorić N, Jovanović S. Properties of free-standing graphene oxide/silver nanowires films and effects of chemical reduction and gamma irradiation. in Synthetic Metals. 2022;283:116980.
doi:10.1016/j.synthmet.2021.116980 .

Mišović, Aleksandra, Bajuk Bogdanović, Danica, Kepić, Dejan, Pavlović, Vladimir, Huskić, Miroslav, Hasheminejad, Navid, Vuye, Cedric, Zorić, Nemanja, Jovanović, Svetlana, "Properties of free-standing graphene oxide/silver nanowires films and effects of chemical reduction and gamma irradiation" in Synthetic Metals, 283 (2022):116980,
https://doi.org/10.1016/j.synthmet.2021.116980 . .

TY  - JOUR
AU  - Kepić, Dejan P.
AU  - Ristić, Ivan S.
AU  - Marinović-Cincović, Milena
AU  - Perusko, Davor
AU  - Spitalsky, Zdenko
AU  - Pavlović, Vladimir
AU  - Budimir, Milica D.
AU  - Siffalović, Peter
AU  - Dramicanin, Miroslav D.
AU  - Micusik, Matej
AU  - Kleinova, Angela
AU  - Janigova, Ivica
AU  - Marković, Zoran M.
AU  - Todorović-Marković, Biljana
PY  - 2018
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4778
AB  - This paper reports a simple route for the preparation of graphene/poly(styrene-b-butadiene-b-styrene) (SBS) nanocomposite films employing a vacuum filtration method. Graphene is exfoliated well by an electrochemical procedure and homogeneously dispersed in the polymer matrix. The prepared nanocomposite films were characterized by XRD, Fourier transform IR (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, AFM and SEM. Morphological studies showed that graphene formed a smooth coating over the surface of SBS. The increase in graphene concentration induces the wrinkling of graphene sheets at the composite surface which causes a further increase in surface roughness. The FTIR, Raman and XPS spectra of graphene/SBS nanocomposite films indicate the strong interactions between graphene and the polymer matrix. According to the XRD patterns, introducing SBS into graphene did not modify the graphene structure additionally, i.e. the crystal lattice parameters do not depend on SBS content in graphene/SBS nanocomposite films. The graphene/SBS nanocomposite films also exhibited better hydrophobicity due to the increased surface roughness and lower sheet resistivity (reduced 10 times) compared to exfoliated graphene.
PB  - Wiley, Hoboken
T2  - Polymer International
T1  - Simple route for the preparation of graphene/poly(styrene-b-butadiene-b-styrene) nanocomposite films with enhanced electrical conductivity and hydrophobicity
EP  - 1127
IS  - 8
SP  - 1118
VL  - 67
DO  - 10.1002/pi.5620
ER  - 

@article{
author = "Kepić, Dejan P. and Ristić, Ivan S. and Marinović-Cincović, Milena and Perusko, Davor and Spitalsky, Zdenko and Pavlović, Vladimir and Budimir, Milica D. and Siffalović, Peter and Dramicanin, Miroslav D. and Micusik, Matej and Kleinova, Angela and Janigova, Ivica and Marković, Zoran M. and Todorović-Marković, Biljana",
year = "2018",
abstract = "This paper reports a simple route for the preparation of graphene/poly(styrene-b-butadiene-b-styrene) (SBS) nanocomposite films employing a vacuum filtration method. Graphene is exfoliated well by an electrochemical procedure and homogeneously dispersed in the polymer matrix. The prepared nanocomposite films were characterized by XRD, Fourier transform IR (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, AFM and SEM. Morphological studies showed that graphene formed a smooth coating over the surface of SBS. The increase in graphene concentration induces the wrinkling of graphene sheets at the composite surface which causes a further increase in surface roughness. The FTIR, Raman and XPS spectra of graphene/SBS nanocomposite films indicate the strong interactions between graphene and the polymer matrix. According to the XRD patterns, introducing SBS into graphene did not modify the graphene structure additionally, i.e. the crystal lattice parameters do not depend on SBS content in graphene/SBS nanocomposite films. The graphene/SBS nanocomposite films also exhibited better hydrophobicity due to the increased surface roughness and lower sheet resistivity (reduced 10 times) compared to exfoliated graphene.",
publisher = "Wiley, Hoboken",
journal = "Polymer International",
title = "Simple route for the preparation of graphene/poly(styrene-b-butadiene-b-styrene) nanocomposite films with enhanced electrical conductivity and hydrophobicity",
pages = "1127-1118",
number = "8",
volume = "67",
doi = "10.1002/pi.5620"
}

Kepić, D. P., Ristić, I. S., Marinović-Cincović, M., Perusko, D., Spitalsky, Z., Pavlović, V., Budimir, M. D., Siffalović, P., Dramicanin, M. D., Micusik, M., Kleinova, A., Janigova, I., Marković, Z. M.,& Todorović-Marković, B.. (2018). Simple route for the preparation of graphene/poly(styrene-b-butadiene-b-styrene) nanocomposite films with enhanced electrical conductivity and hydrophobicity. in Polymer International
Wiley, Hoboken., 67(8), 1118-1127.
https://doi.org/10.1002/pi.5620

Kepić DP, Ristić IS, Marinović-Cincović M, Perusko D, Spitalsky Z, Pavlović V, Budimir MD, Siffalović P, Dramicanin MD, Micusik M, Kleinova A, Janigova I, Marković ZM, Todorović-Marković B. Simple route for the preparation of graphene/poly(styrene-b-butadiene-b-styrene) nanocomposite films with enhanced electrical conductivity and hydrophobicity. in Polymer International. 2018;67(8):1118-1127.
doi:10.1002/pi.5620 .

Kepić, Dejan P., Ristić, Ivan S., Marinović-Cincović, Milena, Perusko, Davor, Spitalsky, Zdenko, Pavlović, Vladimir, Budimir, Milica D., Siffalović, Peter, Dramicanin, Miroslav D., Micusik, Matej, Kleinova, Angela, Janigova, Ivica, Marković, Zoran M., Todorović-Marković, Biljana, "Simple route for the preparation of graphene/poly(styrene-b-butadiene-b-styrene) nanocomposite films with enhanced electrical conductivity and hydrophobicity" in Polymer International, 67, no. 8 (2018):1118-1127,
https://doi.org/10.1002/pi.5620 . .

TY  - JOUR
AU  - Marković, Z.M.
AU  - Kepić, Dejan P.
AU  - Matijašević, Danka
AU  - Pavlović, Vladimir
AU  - Jovanović, S.P.
AU  - Stanković, N.K.
AU  - Milivojević, Dušan D.
AU  - Spitalsky, Z.
AU  - Holclajtner-Antunović, Ivanka
AU  - Bajuk-Bogdanović, Danica
AU  - Nikšić, Miomir
AU  - Todorović-Marković, Biljana
PY  - 2017
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4467
AB  - Curcumin and its derivates are well-known for their different biological activities including antibacterial. On the other hand there are controversial reports concerning the antibacterial potential of graphene and, in particular, graphene oxide. In this study we have reported for the first time the antibacterial activity of curcumin/graphene nanomesh hybrids under ambient light conditions. The graphene nanomesh was synthesized by electrochemical exfoliation of highly oriented pyrolytic graphite in 1 M solution of ammonium persulfate and further functionalized by curcumin. Identical values of minimum inhibitory concentration (1 mg mL(-1)) were determined for pure curcumin and curcumin/graphene nanomesh hybrids toward Staphylococcus aureus. All tested samples had more pronounced antibacterial activity against Gram positive bacteria, Staphylococcus aureus compared to Escherichia coli as a representative of Gram negative strains. The poor antibacterial potential of exfoliated graphene improves significantly by the functionalization with curcumin, which allows for its usage as a antibacterial coating.
PB  - Royal Soc Chemistry, Cambridge
T2  - RSC Advances
T1  - Ambient light induced antibacterial action of curcumin/graphene nanomesh hybrids
EP  - 36092
IS  - 57
SP  - 36081
VL  - 7
DO  - 10.1039/c7ra05027e
ER  - 

@article{
author = "Marković, Z.M. and Kepić, Dejan P. and Matijašević, Danka and Pavlović, Vladimir and Jovanović, S.P. and Stanković, N.K. and Milivojević, Dušan D. and Spitalsky, Z. and Holclajtner-Antunović, Ivanka and Bajuk-Bogdanović, Danica and Nikšić, Miomir and Todorović-Marković, Biljana",
year = "2017",
abstract = "Curcumin and its derivates are well-known for their different biological activities including antibacterial. On the other hand there are controversial reports concerning the antibacterial potential of graphene and, in particular, graphene oxide. In this study we have reported for the first time the antibacterial activity of curcumin/graphene nanomesh hybrids under ambient light conditions. The graphene nanomesh was synthesized by electrochemical exfoliation of highly oriented pyrolytic graphite in 1 M solution of ammonium persulfate and further functionalized by curcumin. Identical values of minimum inhibitory concentration (1 mg mL(-1)) were determined for pure curcumin and curcumin/graphene nanomesh hybrids toward Staphylococcus aureus. All tested samples had more pronounced antibacterial activity against Gram positive bacteria, Staphylococcus aureus compared to Escherichia coli as a representative of Gram negative strains. The poor antibacterial potential of exfoliated graphene improves significantly by the functionalization with curcumin, which allows for its usage as a antibacterial coating.",
publisher = "Royal Soc Chemistry, Cambridge",
journal = "RSC Advances",
title = "Ambient light induced antibacterial action of curcumin/graphene nanomesh hybrids",
pages = "36092-36081",
number = "57",
volume = "7",
doi = "10.1039/c7ra05027e"
}

Marković, Z.M., Kepić, D. P., Matijašević, D., Pavlović, V., Jovanović, S.P., Stanković, N.K., Milivojević, D. D., Spitalsky, Z., Holclajtner-Antunović, I., Bajuk-Bogdanović, D., Nikšić, M.,& Todorović-Marković, B.. (2017). Ambient light induced antibacterial action of curcumin/graphene nanomesh hybrids. in RSC Advances
Royal Soc Chemistry, Cambridge., 7(57), 36081-36092.
https://doi.org/10.1039/c7ra05027e

Marković Z, Kepić DP, Matijašević D, Pavlović V, Jovanović S, Stanković N, Milivojević DD, Spitalsky Z, Holclajtner-Antunović I, Bajuk-Bogdanović D, Nikšić M, Todorović-Marković B. Ambient light induced antibacterial action of curcumin/graphene nanomesh hybrids. in RSC Advances. 2017;7(57):36081-36092.
doi:10.1039/c7ra05027e .

Marković, Z.M., Kepić, Dejan P., Matijašević, Danka, Pavlović, Vladimir, Jovanović, S.P., Stanković, N.K., Milivojević, Dušan D., Spitalsky, Z., Holclajtner-Antunović, Ivanka, Bajuk-Bogdanović, Danica, Nikšić, Miomir, Todorović-Marković, Biljana, "Ambient light induced antibacterial action of curcumin/graphene nanomesh hybrids" in RSC Advances, 7, no. 57 (2017):36081-36092,
https://doi.org/10.1039/c7ra05027e . .

TY  - JOUR
AU  - Marković, Z.M.
AU  - Budimir, Milica D.
AU  - Kepić, Dejan P.
AU  - Holclajtner-Antunović, Ivanka
AU  - Marinović-Cincović, Milena
AU  - Dramicanin, Miroslav D.
AU  - Spasojević, V.D.
AU  - Perusko, Davor
AU  - Spitalsky, Z.
AU  - Micusik, M.
AU  - Pavlović, Vladimir
AU  - Todorović-Marković, Biljana
PY  - 2016
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4203
AB  - The electrochemical exfoliation of graphite to give one-atom-thick graphene with desirable properties is a green, cost-effective method for high-yield graphene production. This paper presents the results of electrochemical exfoliation of two different graphite precursors under an applied direct current voltage of +12 V. The used characterization techniques (elemental analysis, Fourier transform infrared spectroscopy, X-ray diffraction, X-photoelectron spectroscopy, Raman spectroscopy, field emission scanning electron microscopy and atomic force microscopy) showed that the exfoliated powder is highly functionalized with a low carbon/oxygen content that is similar to graphene oxide. The exfoliated graphene sheets dispersed in N,N'-dimethylformamide were deposited on ano-discs by vacuum filtration and transferred to glass ceramic substrates. The thermal annealing of the as-deposited films at 600 degrees C for 30 minutes resulted in an increase in the carbon/oxygen ratio by more than 3 fold and a decrease in the sheet resistance by 25%. The lowest values for the sheet resistance of the annealed graphene thin films were in the range of 0.32 +/- 0.04 to 0.84 +/- 0.1 kohm sq(-1) depending on the graphite source that was used.
PB  - Royal Soc Chemistry, Cambridge
T2  - RSC Advances
T1  - Semi-transparent, conductive thin films of electrochemical exfoliated graphene
EP  - 39283
IS  - 45
SP  - 39275
VL  - 6
DO  - 10.1039/c6ra04250c
ER  - 

@article{
author = "Marković, Z.M. and Budimir, Milica D. and Kepić, Dejan P. and Holclajtner-Antunović, Ivanka and Marinović-Cincović, Milena and Dramicanin, Miroslav D. and Spasojević, V.D. and Perusko, Davor and Spitalsky, Z. and Micusik, M. and Pavlović, Vladimir and Todorović-Marković, Biljana",
year = "2016",
abstract = "The electrochemical exfoliation of graphite to give one-atom-thick graphene with desirable properties is a green, cost-effective method for high-yield graphene production. This paper presents the results of electrochemical exfoliation of two different graphite precursors under an applied direct current voltage of +12 V. The used characterization techniques (elemental analysis, Fourier transform infrared spectroscopy, X-ray diffraction, X-photoelectron spectroscopy, Raman spectroscopy, field emission scanning electron microscopy and atomic force microscopy) showed that the exfoliated powder is highly functionalized with a low carbon/oxygen content that is similar to graphene oxide. The exfoliated graphene sheets dispersed in N,N'-dimethylformamide were deposited on ano-discs by vacuum filtration and transferred to glass ceramic substrates. The thermal annealing of the as-deposited films at 600 degrees C for 30 minutes resulted in an increase in the carbon/oxygen ratio by more than 3 fold and a decrease in the sheet resistance by 25%. The lowest values for the sheet resistance of the annealed graphene thin films were in the range of 0.32 +/- 0.04 to 0.84 +/- 0.1 kohm sq(-1) depending on the graphite source that was used.",
publisher = "Royal Soc Chemistry, Cambridge",
journal = "RSC Advances",
title = "Semi-transparent, conductive thin films of electrochemical exfoliated graphene",
pages = "39283-39275",
number = "45",
volume = "6",
doi = "10.1039/c6ra04250c"
}

Marković, Z.M., Budimir, M. D., Kepić, D. P., Holclajtner-Antunović, I., Marinović-Cincović, M., Dramicanin, M. D., Spasojević, V.D., Perusko, D., Spitalsky, Z., Micusik, M., Pavlović, V.,& Todorović-Marković, B.. (2016). Semi-transparent, conductive thin films of electrochemical exfoliated graphene. in RSC Advances
Royal Soc Chemistry, Cambridge., 6(45), 39275-39283.
https://doi.org/10.1039/c6ra04250c

Marković Z, Budimir MD, Kepić DP, Holclajtner-Antunović I, Marinović-Cincović M, Dramicanin MD, Spasojević V, Perusko D, Spitalsky Z, Micusik M, Pavlović V, Todorović-Marković B. Semi-transparent, conductive thin films of electrochemical exfoliated graphene. in RSC Advances. 2016;6(45):39275-39283.
doi:10.1039/c6ra04250c .

Marković, Z.M., Budimir, Milica D., Kepić, Dejan P., Holclajtner-Antunović, Ivanka, Marinović-Cincović, Milena, Dramicanin, Miroslav D., Spasojević, V.D., Perusko, Davor, Spitalsky, Z., Micusik, M., Pavlović, Vladimir, Todorović-Marković, Biljana, "Semi-transparent, conductive thin films of electrochemical exfoliated graphene" in RSC Advances, 6, no. 45 (2016):39275-39283,
https://doi.org/10.1039/c6ra04250c . .

TY  - JOUR
AU  - Jovanović, Svetlana P.
AU  - Syrgiannis, Zois
AU  - Marković, Zoran M.
AU  - Bonasera, Aurelio
AU  - Kepić, Dejan P.
AU  - Budimir, Milica D.
AU  - Milivojević, Dušan D.
AU  - Spasojević, Vuk D.
AU  - Dramicanin, Miroslav D.
AU  - Pavlović, Vladimir
AU  - Todorović-Marković, Biljana
PY  - 2015
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3755
AB  - Herein, the ability of gamma irradiation to enhance the photoluminescence properties of graphene quantum dots (GQDs) was investigated. Different doses of gamma-irradiation were used on GQDs to examine the way in which their structure and optical properties can be affected. The photoluminescence quantum yield was increased six times for the GQDs irradiated with high doses compared to the nonirradiated material. Both photoluminescence lifetime and values of optical band gap were increased with the dose of applied gamma irradiation. In addition, the exploitation of the gamma-irradiated GQDs as photosensitizers was examined by monitoring the production of singlet oxygen under UV illumination. The main outcome was that the GQDs irradiated at lower doses act as better photoproducers than the ones irradiated at higher doses. These results corroborate that the structural changes caused by gamma irradiation have a direct impact on GQD ability to produce singlet oxygen and their photostability under prolonged UV illumination. This makes low-dose irradiated GQDs promising candidates for photodynamic therapy.
PB  - Amer Chemical Soc, Washington
T2  - ACS Applied Materials & Interfaces
T1  - Modification of Structural and Luminescence Properties of Graphene Quantum Dots by Gamma Irradiation and Their Application in a Photodynamic Therapy
EP  - 25874
IS  - 46
SP  - 25865
VL  - 7
DO  - 10.1021/acsami.5b08226
ER  - 

@article{
author = "Jovanović, Svetlana P. and Syrgiannis, Zois and Marković, Zoran M. and Bonasera, Aurelio and Kepić, Dejan P. and Budimir, Milica D. and Milivojević, Dušan D. and Spasojević, Vuk D. and Dramicanin, Miroslav D. and Pavlović, Vladimir and Todorović-Marković, Biljana",
year = "2015",
abstract = "Herein, the ability of gamma irradiation to enhance the photoluminescence properties of graphene quantum dots (GQDs) was investigated. Different doses of gamma-irradiation were used on GQDs to examine the way in which their structure and optical properties can be affected. The photoluminescence quantum yield was increased six times for the GQDs irradiated with high doses compared to the nonirradiated material. Both photoluminescence lifetime and values of optical band gap were increased with the dose of applied gamma irradiation. In addition, the exploitation of the gamma-irradiated GQDs as photosensitizers was examined by monitoring the production of singlet oxygen under UV illumination. The main outcome was that the GQDs irradiated at lower doses act as better photoproducers than the ones irradiated at higher doses. These results corroborate that the structural changes caused by gamma irradiation have a direct impact on GQD ability to produce singlet oxygen and their photostability under prolonged UV illumination. This makes low-dose irradiated GQDs promising candidates for photodynamic therapy.",
publisher = "Amer Chemical Soc, Washington",
journal = "ACS Applied Materials & Interfaces",
title = "Modification of Structural and Luminescence Properties of Graphene Quantum Dots by Gamma Irradiation and Their Application in a Photodynamic Therapy",
pages = "25874-25865",
number = "46",
volume = "7",
doi = "10.1021/acsami.5b08226"
}

Jovanović, S. P., Syrgiannis, Z., Marković, Z. M., Bonasera, A., Kepić, D. P., Budimir, M. D., Milivojević, D. D., Spasojević, V. D., Dramicanin, M. D., Pavlović, V.,& Todorović-Marković, B.. (2015). Modification of Structural and Luminescence Properties of Graphene Quantum Dots by Gamma Irradiation and Their Application in a Photodynamic Therapy. in ACS Applied Materials & Interfaces
Amer Chemical Soc, Washington., 7(46), 25865-25874.
https://doi.org/10.1021/acsami.5b08226

Jovanović SP, Syrgiannis Z, Marković ZM, Bonasera A, Kepić DP, Budimir MD, Milivojević DD, Spasojević VD, Dramicanin MD, Pavlović V, Todorović-Marković B. Modification of Structural and Luminescence Properties of Graphene Quantum Dots by Gamma Irradiation and Their Application in a Photodynamic Therapy. in ACS Applied Materials & Interfaces. 2015;7(46):25865-25874.
doi:10.1021/acsami.5b08226 .

Jovanović, Svetlana P., Syrgiannis, Zois, Marković, Zoran M., Bonasera, Aurelio, Kepić, Dejan P., Budimir, Milica D., Milivojević, Dušan D., Spasojević, Vuk D., Dramicanin, Miroslav D., Pavlović, Vladimir, Todorović-Marković, Biljana, "Modification of Structural and Luminescence Properties of Graphene Quantum Dots by Gamma Irradiation and Their Application in a Photodynamic Therapy" in ACS Applied Materials & Interfaces, 7, no. 46 (2015):25865-25874,
https://doi.org/10.1021/acsami.5b08226 . .

TY  - JOUR
AU  - Kepić, Dejan P.
AU  - Marković, Zoran M.
AU  - Jovanović, Svetlana P.
AU  - Perusko, Davor
AU  - Budimir, Milica D.
AU  - Holclajtner-Antunović, Ivanka
AU  - Pavlović, Vladimir
AU  - Todorović-Marković, Biljana
PY  - 2014
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3443
AB  - Enhanced conductivity, transparency and stability are the most important factors to consider in order to prepare electrodes for optoelectronic devices. In this paper, we investigated the properties of poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) films doped with graphene and graphene quantum dots. Samples were deposited by spin-coating onto glass substrates. Thin films were characterized by UV-vis and Raman spectroscopy, atomic force microscopy (AFM), scanning electron microscopy (SEM) and four-point probe measurements. It was found that both graphene and graphene quantum dots improve the conductivity of PEDOT:PSS films with only small decrease in transparency. AFM and SEM analysis showed homogenous distribution of spherical nanoparticles of graphene quantum dots and irregular shaped nanoparticles of graphene in PEDOT:PSS.
PB  - Elsevier Science Sa, Lausanne
T2  - Synthetic Metals
T1  - Preparation of PEDOT:PSS thin films doped with graphene and graphene quantum dots
EP  - 154
SP  - 150
VL  - 198
DO  - 10.1016/j.synthmet.2014.10.017
ER  - 

@article{
author = "Kepić, Dejan P. and Marković, Zoran M. and Jovanović, Svetlana P. and Perusko, Davor and Budimir, Milica D. and Holclajtner-Antunović, Ivanka and Pavlović, Vladimir and Todorović-Marković, Biljana",
year = "2014",
abstract = "Enhanced conductivity, transparency and stability are the most important factors to consider in order to prepare electrodes for optoelectronic devices. In this paper, we investigated the properties of poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) films doped with graphene and graphene quantum dots. Samples were deposited by spin-coating onto glass substrates. Thin films were characterized by UV-vis and Raman spectroscopy, atomic force microscopy (AFM), scanning electron microscopy (SEM) and four-point probe measurements. It was found that both graphene and graphene quantum dots improve the conductivity of PEDOT:PSS films with only small decrease in transparency. AFM and SEM analysis showed homogenous distribution of spherical nanoparticles of graphene quantum dots and irregular shaped nanoparticles of graphene in PEDOT:PSS.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Synthetic Metals",
title = "Preparation of PEDOT:PSS thin films doped with graphene and graphene quantum dots",
pages = "154-150",
volume = "198",
doi = "10.1016/j.synthmet.2014.10.017"
}

Kepić, D. P., Marković, Z. M., Jovanović, S. P., Perusko, D., Budimir, M. D., Holclajtner-Antunović, I., Pavlović, V.,& Todorović-Marković, B.. (2014). Preparation of PEDOT:PSS thin films doped with graphene and graphene quantum dots. in Synthetic Metals
Elsevier Science Sa, Lausanne., 198, 150-154.
https://doi.org/10.1016/j.synthmet.2014.10.017

Kepić DP, Marković ZM, Jovanović SP, Perusko D, Budimir MD, Holclajtner-Antunović I, Pavlović V, Todorović-Marković B. Preparation of PEDOT:PSS thin films doped with graphene and graphene quantum dots. in Synthetic Metals. 2014;198:150-154.
doi:10.1016/j.synthmet.2014.10.017 .

Kepić, Dejan P., Marković, Zoran M., Jovanović, Svetlana P., Perusko, Davor, Budimir, Milica D., Holclajtner-Antunović, Ivanka, Pavlović, Vladimir, Todorović-Marković, Biljana, "Preparation of PEDOT:PSS thin films doped with graphene and graphene quantum dots" in Synthetic Metals, 198 (2014):150-154,
https://doi.org/10.1016/j.synthmet.2014.10.017 . .

TY  - JOUR
AU  - Kleut, D.
AU  - Jovanović, S.
AU  - Marković, Z.
AU  - Kepić, Dejan P.
AU  - Tosić, D.
AU  - Romcević, N.
AU  - Marinović-Cincović, Milena
AU  - Dramicanin, Miroslav D.
AU  - Holclajtner-Antunović, Ivanka
AU  - Pavlović, Vladimir
AU  - Drazić, G.
AU  - Milosavljević, M.
AU  - Todorović-Marković, Biljana
PY  - 2012
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2980
AB  - A systematic study of the gamma irradiation effects on single wall carbon nanotube (SWCNT) structure was conducted. Nanotubes were exposed to different doses of gamma irradiation in three media. Irradiation was carried out in air, water and aqueous ammonia. Thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FTIR), elemental analysis (EA) and Raman spectroscopy confirmed the changes in the SWCNT structure. TGA measurements showed the highest percentage of introduced groups for the SWCNTs irradiated with 100 kGy. FTIR spectroscopy provided evidence for the attachment of hydroxyl, carboxyl and nitrile functional groups to the SWCNT sidewalls. Those groups were confirmed by EA. All irradiated SWCNTs had hydroxyl and carboxyl groups irrelevant to media used for irradiation, but nitrile functional groups were only identified in SWCNTs irradiated in aqueous ammonia. Raman spectroscopy indicated that the degree of disorder in the carbon nanotube structure correlates with the irradiation dose. For the nanotubes irradiated with the dose of 100 kGy, the Raman I-D/I-G ratio was three times higher than for the pristine ones. Atomic force microscopy showed a 50% decrease in nanotube length at a radiation dose of 100 kGy. Scanning and transmission electron microscopies showed significant changes in the morphology and structure of gamma irradiated SWCNTs.
PB  - Elsevier Science Inc, New York
T2  - Materials Characterization
T1  - Comparison of structural properties of pristine and gamma irradiated single-wall carbon nanotubes: Effects of medium and irradiation dose
EP  - 45
SP  - 37
VL  - 72
DO  - 10.1016/j.matchar.2012.07.002
ER  - 

@article{
author = "Kleut, D. and Jovanović, S. and Marković, Z. and Kepić, Dejan P. and Tosić, D. and Romcević, N. and Marinović-Cincović, Milena and Dramicanin, Miroslav D. and Holclajtner-Antunović, Ivanka and Pavlović, Vladimir and Drazić, G. and Milosavljević, M. and Todorović-Marković, Biljana",
year = "2012",
abstract = "A systematic study of the gamma irradiation effects on single wall carbon nanotube (SWCNT) structure was conducted. Nanotubes were exposed to different doses of gamma irradiation in three media. Irradiation was carried out in air, water and aqueous ammonia. Thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FTIR), elemental analysis (EA) and Raman spectroscopy confirmed the changes in the SWCNT structure. TGA measurements showed the highest percentage of introduced groups for the SWCNTs irradiated with 100 kGy. FTIR spectroscopy provided evidence for the attachment of hydroxyl, carboxyl and nitrile functional groups to the SWCNT sidewalls. Those groups were confirmed by EA. All irradiated SWCNTs had hydroxyl and carboxyl groups irrelevant to media used for irradiation, but nitrile functional groups were only identified in SWCNTs irradiated in aqueous ammonia. Raman spectroscopy indicated that the degree of disorder in the carbon nanotube structure correlates with the irradiation dose. For the nanotubes irradiated with the dose of 100 kGy, the Raman I-D/I-G ratio was three times higher than for the pristine ones. Atomic force microscopy showed a 50% decrease in nanotube length at a radiation dose of 100 kGy. Scanning and transmission electron microscopies showed significant changes in the morphology and structure of gamma irradiated SWCNTs.",
publisher = "Elsevier Science Inc, New York",
journal = "Materials Characterization",
title = "Comparison of structural properties of pristine and gamma irradiated single-wall carbon nanotubes: Effects of medium and irradiation dose",
pages = "45-37",
volume = "72",
doi = "10.1016/j.matchar.2012.07.002"
}

Kleut, D., Jovanović, S., Marković, Z., Kepić, D. P., Tosić, D., Romcević, N., Marinović-Cincović, M., Dramicanin, M. D., Holclajtner-Antunović, I., Pavlović, V., Drazić, G., Milosavljević, M.,& Todorović-Marković, B.. (2012). Comparison of structural properties of pristine and gamma irradiated single-wall carbon nanotubes: Effects of medium and irradiation dose. in Materials Characterization
Elsevier Science Inc, New York., 72, 37-45.
https://doi.org/10.1016/j.matchar.2012.07.002

Kleut D, Jovanović S, Marković Z, Kepić DP, Tosić D, Romcević N, Marinović-Cincović M, Dramicanin MD, Holclajtner-Antunović I, Pavlović V, Drazić G, Milosavljević M, Todorović-Marković B. Comparison of structural properties of pristine and gamma irradiated single-wall carbon nanotubes: Effects of medium and irradiation dose. in Materials Characterization. 2012;72:37-45.
doi:10.1016/j.matchar.2012.07.002 .

Kleut, D., Jovanović, S., Marković, Z., Kepić, Dejan P., Tosić, D., Romcević, N., Marinović-Cincović, Milena, Dramicanin, Miroslav D., Holclajtner-Antunović, Ivanka, Pavlović, Vladimir, Drazić, G., Milosavljević, M., Todorović-Marković, Biljana, "Comparison of structural properties of pristine and gamma irradiated single-wall carbon nanotubes: Effects of medium and irradiation dose" in Materials Characterization, 72 (2012):37-45,
https://doi.org/10.1016/j.matchar.2012.07.002 . .