TY  - JOUR
AU  - Kepić, D.P.
AU  - Kleut, D.N.
AU  - Marković, Z.M.
AU  - Bajuk-Bogdanović, D.V.
AU  - Pavlović, V.B.
AU  - Krmpot, A. J.
AU  - Lekić, M.M.
AU  - Jovanović, D.J.
AU  - Todorović-Marković, B.M.
PY  - 2021
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5809
AB  - Graphene is an excellent material to anchor metal nanoparticles due to its large surface area. In this paper, we report the use of electrochemically exfoliated graphene as support to anchor gold nanoparticles (Au NPs). Au NPs are synthesized via the reduction of chloroauric acid under gamma irradiation at low doses of 1, 5, and 10 kGy and directly deposited onto the graphene surface, making this procedure simple and fast. Good water dispersibility of exfoliated graphene, due to the presence of oxygen-containing functional groups in the structure of graphene, provides long-term stability of Au NPs - graphene composite dispersions. The majority of the Au NPs obtained by this method have sizes of up to 40 nm, while the increase in the applied dose leads to an increase in the amount of smaller nanoparticles. The increase of temperature of the prepared composite material upon irradiation with an 808 nm continuous wave laser was monitored. All samples show a temperature increase between 21.5 and 25.6 °C for 10 min of the laser exposure, which indicates that Au NPs - graphene composite can effectively be used in photothermal treatment for cancer therapy.
PB  - Elsevier Inc.
T2  - Materials Characterization
T1  - One-step preparation of gold nanoparticles - exfoliated graphene composite by gamma irradiation at low doses for photothermal therapy applications
SP  - 110994
VL  - 173
DO  - 10.1016/j.matchar.2021.110944
ER  - 

@article{
author = "Kepić, D.P. and Kleut, D.N. and Marković, Z.M. and Bajuk-Bogdanović, D.V. and Pavlović, V.B. and Krmpot, A. J. and Lekić, M.M. and Jovanović, D.J. and Todorović-Marković, B.M.",
year = "2021",
abstract = "Graphene is an excellent material to anchor metal nanoparticles due to its large surface area. In this paper, we report the use of electrochemically exfoliated graphene as support to anchor gold nanoparticles (Au NPs). Au NPs are synthesized via the reduction of chloroauric acid under gamma irradiation at low doses of 1, 5, and 10 kGy and directly deposited onto the graphene surface, making this procedure simple and fast. Good water dispersibility of exfoliated graphene, due to the presence of oxygen-containing functional groups in the structure of graphene, provides long-term stability of Au NPs - graphene composite dispersions. The majority of the Au NPs obtained by this method have sizes of up to 40 nm, while the increase in the applied dose leads to an increase in the amount of smaller nanoparticles. The increase of temperature of the prepared composite material upon irradiation with an 808 nm continuous wave laser was monitored. All samples show a temperature increase between 21.5 and 25.6 °C for 10 min of the laser exposure, which indicates that Au NPs - graphene composite can effectively be used in photothermal treatment for cancer therapy.",
publisher = "Elsevier Inc.",
journal = "Materials Characterization",
title = "One-step preparation of gold nanoparticles - exfoliated graphene composite by gamma irradiation at low doses for photothermal therapy applications",
pages = "110994",
volume = "173",
doi = "10.1016/j.matchar.2021.110944"
}

Kepić, D.P., Kleut, D.N., Marković, Z.M., Bajuk-Bogdanović, D.V., Pavlović, V.B., Krmpot, A. J., Lekić, M.M., Jovanović, D.J.,& Todorović-Marković, B.M.. (2021). One-step preparation of gold nanoparticles - exfoliated graphene composite by gamma irradiation at low doses for photothermal therapy applications. in Materials Characterization
Elsevier Inc.., 173, 110994.
https://doi.org/10.1016/j.matchar.2021.110944

Kepić D, Kleut D, Marković Z, Bajuk-Bogdanović D, Pavlović V, Krmpot AJ, Lekić M, Jovanović D, Todorović-Marković B. One-step preparation of gold nanoparticles - exfoliated graphene composite by gamma irradiation at low doses for photothermal therapy applications. in Materials Characterization. 2021;173:110994.
doi:10.1016/j.matchar.2021.110944 .

Kepić, D.P., Kleut, D.N., Marković, Z.M., Bajuk-Bogdanović, D.V., Pavlović, V.B., Krmpot, A. J., Lekić, M.M., Jovanović, D.J., Todorović-Marković, B.M., "One-step preparation of gold nanoparticles - exfoliated graphene composite by gamma irradiation at low doses for photothermal therapy applications" in Materials Characterization, 173 (2021):110994,
https://doi.org/10.1016/j.matchar.2021.110944 . .

TY  - JOUR
AU  - Marković, Z.M.
AU  - Labudová, M.
AU  - Danko, Martin
AU  - Matijašević, D.
AU  - Mičušík, M.
AU  - Nádaždy, V.
AU  - Kováčová, M.
AU  - Kleinova, Angela
AU  - Špitalský, Z.
AU  - Pavlović, Vladimir
AU  - Milivojević, Dušan D.
AU  - Medić, Mira
AU  - Todorović-Marković, B.M.
PY  - 2020
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5422
AB  - The addition of heteroatoms to pristine carbon quantum dots (CQDs) change their structure and optical properties. In this study, fluorine (F)- and chlorine (Cl)-doped CQDs are prepared by the one-step green hydrothermal route from sodium fluoride, sodium chloride, urea, and citric acid as the starting precursors. Microscopy analysis reveals that the average size of these quantum dots is 5 ± 2 nm, whereas the chemical study shows the existence of C-F and C-Cl bonds. The produced F- and Cl-doped CQDs have fluorescence quantum yields of 0.151 and 0.284, respectively, at an excitation wavelength of 450 nm. Charge transfer resistance of F- and Cl-doped CQDs films is 2 orders of magnitude higher than in the pristine CQD films. Transport band gap of the doped CQDs is 2 eV bigger than that of pristine CQDs. Radical scavenging activity shows very good antioxidant activity of doped CQDs. Antibacterial testing reveals poor antibacterial activity against Staphylococcus aureus and Escherichia coli. The F- and Cl-doped CQDs are successfully used as fluorescent probes for cell imaging as shown by confocal microscopy.
PB  - American Chemical Society
T2  - ACS Sustainable Chemistry and Engineering
T1  - Highly Efficient Antioxidant F- And Cl-Doped Carbon Quantum Dots for Bioimaging
DO  - 10.1021/acssuschemeng.0c06260
ER  - 

@article{
author = "Marković, Z.M. and Labudová, M. and Danko, Martin and Matijašević, D. and Mičušík, M. and Nádaždy, V. and Kováčová, M. and Kleinova, Angela and Špitalský, Z. and Pavlović, Vladimir and Milivojević, Dušan D. and Medić, Mira and Todorović-Marković, B.M.",
year = "2020",
abstract = "The addition of heteroatoms to pristine carbon quantum dots (CQDs) change their structure and optical properties. In this study, fluorine (F)- and chlorine (Cl)-doped CQDs are prepared by the one-step green hydrothermal route from sodium fluoride, sodium chloride, urea, and citric acid as the starting precursors. Microscopy analysis reveals that the average size of these quantum dots is 5 ± 2 nm, whereas the chemical study shows the existence of C-F and C-Cl bonds. The produced F- and Cl-doped CQDs have fluorescence quantum yields of 0.151 and 0.284, respectively, at an excitation wavelength of 450 nm. Charge transfer resistance of F- and Cl-doped CQDs films is 2 orders of magnitude higher than in the pristine CQD films. Transport band gap of the doped CQDs is 2 eV bigger than that of pristine CQDs. Radical scavenging activity shows very good antioxidant activity of doped CQDs. Antibacterial testing reveals poor antibacterial activity against Staphylococcus aureus and Escherichia coli. The F- and Cl-doped CQDs are successfully used as fluorescent probes for cell imaging as shown by confocal microscopy.",
publisher = "American Chemical Society",
journal = "ACS Sustainable Chemistry and Engineering",
title = "Highly Efficient Antioxidant F- And Cl-Doped Carbon Quantum Dots for Bioimaging",
doi = "10.1021/acssuschemeng.0c06260"
}

Marković, Z.M., Labudová, M., Danko, M., Matijašević, D., Mičušík, M., Nádaždy, V., Kováčová, M., Kleinova, A., Špitalský, Z., Pavlović, V., Milivojević, D. D., Medić, M.,& Todorović-Marković, B.M.. (2020). Highly Efficient Antioxidant F- And Cl-Doped Carbon Quantum Dots for Bioimaging. in ACS Sustainable Chemistry and Engineering
American Chemical Society..
https://doi.org/10.1021/acssuschemeng.0c06260

Marković Z, Labudová M, Danko M, Matijašević D, Mičušík M, Nádaždy V, Kováčová M, Kleinova A, Špitalský Z, Pavlović V, Milivojević DD, Medić M, Todorović-Marković B. Highly Efficient Antioxidant F- And Cl-Doped Carbon Quantum Dots for Bioimaging. in ACS Sustainable Chemistry and Engineering. 2020;.
doi:10.1021/acssuschemeng.0c06260 .

Marković, Z.M., Labudová, M., Danko, Martin, Matijašević, D., Mičušík, M., Nádaždy, V., Kováčová, M., Kleinova, Angela, Špitalský, Z., Pavlović, Vladimir, Milivojević, Dušan D., Medić, Mira, Todorović-Marković, B.M., "Highly Efficient Antioxidant F- And Cl-Doped Carbon Quantum Dots for Bioimaging" in ACS Sustainable Chemistry and Engineering (2020),
https://doi.org/10.1021/acssuschemeng.0c06260 . .

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  - CONF
AU  - Prekodravac, J.R.
AU  - Jovanović, S.P.
AU  - Holclajtner-Antunović, Ivanka
AU  - Perusko, Davor
AU  - Pavlović, Vladimir
AU  - Tosić, D.D.
AU  - Todorović-Marković, Biljana
AU  - Marković, Z.M.
PY  - 2014
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3475
AB  - In this paper we present synthesis of monolayer graphene islands. These films are deposited through nickel catalyzed transformation of fullerol and graphene quantum dots. Carbon doped nickel films are produced by autocatalytic chemical deposition. Upon rapid thermal annealing, graphene films are formed. Different characterization techniques are applied: Raman spectroscopy, scanning electron and atomic force microscopy. Raman spectroscopy analysis confirmed the formation of monolayer graphene films. Microscopy analysis revealed formation of monolayer islands.
PB  - IOP Publishing Ltd, Bristol
C3  - Physica Scripta
T1  - Monolayer graphene films through nickel catalyzed transformation of fullerol and graphene quantum dots: a Raman spectroscopy study
VL  - T162
DO  - 10.1088/0031-8949/2014/T162/014030
ER  - 

@conference{
author = "Prekodravac, J.R. and Jovanović, S.P. and Holclajtner-Antunović, Ivanka and Perusko, Davor and Pavlović, Vladimir and Tosić, D.D. and Todorović-Marković, Biljana and Marković, Z.M.",
year = "2014",
abstract = "In this paper we present synthesis of monolayer graphene islands. These films are deposited through nickel catalyzed transformation of fullerol and graphene quantum dots. Carbon doped nickel films are produced by autocatalytic chemical deposition. Upon rapid thermal annealing, graphene films are formed. Different characterization techniques are applied: Raman spectroscopy, scanning electron and atomic force microscopy. Raman spectroscopy analysis confirmed the formation of monolayer graphene films. Microscopy analysis revealed formation of monolayer islands.",
publisher = "IOP Publishing Ltd, Bristol",
journal = "Physica Scripta",
title = "Monolayer graphene films through nickel catalyzed transformation of fullerol and graphene quantum dots: a Raman spectroscopy study",
volume = "T162",
doi = "10.1088/0031-8949/2014/T162/014030"
}

Prekodravac, J.R., Jovanović, S.P., Holclajtner-Antunović, I., Perusko, D., Pavlović, V., Tosić, D.D., Todorović-Marković, B.,& Marković, Z.M.. (2014). Monolayer graphene films through nickel catalyzed transformation of fullerol and graphene quantum dots: a Raman spectroscopy study. in Physica Scripta
IOP Publishing Ltd, Bristol., T162.
https://doi.org/10.1088/0031-8949/2014/T162/014030

Prekodravac J, Jovanović S, Holclajtner-Antunović I, Perusko D, Pavlović V, Tosić D, Todorović-Marković B, Marković Z. Monolayer graphene films through nickel catalyzed transformation of fullerol and graphene quantum dots: a Raman spectroscopy study. in Physica Scripta. 2014;T162.
doi:10.1088/0031-8949/2014/T162/014030 .

Prekodravac, J.R., Jovanović, S.P., Holclajtner-Antunović, Ivanka, Perusko, Davor, Pavlović, Vladimir, Tosić, D.D., Todorović-Marković, Biljana, Marković, Z.M., "Monolayer graphene films through nickel catalyzed transformation of fullerol and graphene quantum dots: a Raman spectroscopy study" in Physica Scripta, T162 (2014),
https://doi.org/10.1088/0031-8949/2014/T162/014030 . .