TY  - JOUR
AU  - Marković, Zoran M.
AU  - Zmejkoski, Danica Z.
AU  - Budimir, Milica D.
AU  - Bugarova, Nikol
AU  - Kleinova, Angela
AU  - Kuzman, Sanja B.
AU  - Špitalský, Zdeno
AU  - Pavlović, Vladimir
AU  - Milivojević, Dušan D.
AU  - Todorović Marković, Biljana M.
PY  - 2021
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5988
AB  - Due to their unique structural properties bacterial cellulose (BC) hydrogels find possible usage in many fields such as cosmetology, food industry, or medicine. In this study, photoactive BC hydrogels are investigated through modifications of their structural, mechanical, and pro-oxidant properties resulting from graphene quantum dots (GQDs) encapsulation. Detailed structural analysis is conducted by atomic force microscopy, transmission electron microscopy and scanning electron microscopy, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, and X-ray diffraction method. Dynamic mechanical analysis is performed to study the changes in storage modulus, loss modulus and tan δ. Pro-oxidative properties of new designed composites are tested by electron paramagnetic resonance (EPR). Structural and mechanical analyses show successful encapsulation of GQDs into BC whereas EPR measurements indicate high potential of these composites for singlet oxygen production.
PB  - John Wiley and Sons Inc
T2  - Journal of Applied Polymer Science
T1  - Photoactive graphene quantum dots/bacterial cellulosehydrogels: Structural, mechanical, and pro-oxidant study
DO  - 10.1002/app.51996
ER  - 

@article{
author = "Marković, Zoran M. and Zmejkoski, Danica Z. and Budimir, Milica D. and Bugarova, Nikol and Kleinova, Angela and Kuzman, Sanja B. and Špitalský, Zdeno and Pavlović, Vladimir and Milivojević, Dušan D. and Todorović Marković, Biljana M.",
year = "2021",
abstract = "Due to their unique structural properties bacterial cellulose (BC) hydrogels find possible usage in many fields such as cosmetology, food industry, or medicine. In this study, photoactive BC hydrogels are investigated through modifications of their structural, mechanical, and pro-oxidant properties resulting from graphene quantum dots (GQDs) encapsulation. Detailed structural analysis is conducted by atomic force microscopy, transmission electron microscopy and scanning electron microscopy, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, and X-ray diffraction method. Dynamic mechanical analysis is performed to study the changes in storage modulus, loss modulus and tan δ. Pro-oxidative properties of new designed composites are tested by electron paramagnetic resonance (EPR). Structural and mechanical analyses show successful encapsulation of GQDs into BC whereas EPR measurements indicate high potential of these composites for singlet oxygen production.",
publisher = "John Wiley and Sons Inc",
journal = "Journal of Applied Polymer Science",
title = "Photoactive graphene quantum dots/bacterial cellulosehydrogels: Structural, mechanical, and pro-oxidant study",
doi = "10.1002/app.51996"
}

Marković, Z. M., Zmejkoski, D. Z., Budimir, M. D., Bugarova, N., Kleinova, A., Kuzman, S. B., Špitalský, Z., Pavlović, V., Milivojević, D. D.,& Todorović Marković, B. M.. (2021). Photoactive graphene quantum dots/bacterial cellulosehydrogels: Structural, mechanical, and pro-oxidant study. in Journal of Applied Polymer Science
John Wiley and Sons Inc..
https://doi.org/10.1002/app.51996

Marković ZM, Zmejkoski DZ, Budimir MD, Bugarova N, Kleinova A, Kuzman SB, Špitalský Z, Pavlović V, Milivojević DD, Todorović Marković BM. Photoactive graphene quantum dots/bacterial cellulosehydrogels: Structural, mechanical, and pro-oxidant study. in Journal of Applied Polymer Science. 2021;.
doi:10.1002/app.51996 .

Marković, Zoran M., Zmejkoski, Danica Z., Budimir, Milica D., Bugarova, Nikol, Kleinova, Angela, Kuzman, Sanja B., Špitalský, Zdeno, Pavlović, Vladimir, Milivojević, Dušan D., Todorović Marković, Biljana M., "Photoactive graphene quantum dots/bacterial cellulosehydrogels: Structural, mechanical, and pro-oxidant study" in Journal of Applied Polymer Science (2021),
https://doi.org/10.1002/app.51996 . .

TY  - JOUR
AU  - Jovanović, Svetlana P.
AU  - Syrgiannis, Zois
AU  - Budimir, Milica D.
AU  - Milivojević, Dušan D.
AU  - Jovanović, Dragana J.
AU  - Pavlović, Vladimir
AU  - Papan, Jelena M.
AU  - Bartenwerfer, Malte
AU  - Mojsin, Marija M.
AU  - Stevanović, Milena J.
AU  - Todorović-Marković, Biljana
PY  - 2020
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5390
AB  - Due to their low cost and possible green synthesis, high stability and resistance to photobleaching, graphene quantum dots (GQDs) can be considered as one of the class of carbon nanomaterials which may have great potential as an agent for photosensitized oxygen activation. In such a way, GQDs can be used as a theranostic agent in photodynamic therapy. In this work pristine GQDs, GQDs irradiated with gamma rays and GQDs doped with N and N, S atoms are produced using a simple, green approach. By using different techniques (AFM, HRTEM, SEM-EDS, FTIR, XRD, PL and UV-Vis) we investigated structural and optical properties of the new types of GQDs. We showed that GQDs functionalized with thiourea (GQDs-TU) completely lost the ability to produce singlet oxygen (O-1(2)) upon photoexcitation while functionalization with urea (GQDs-U) improves the capability of GQDs to produce O-1(2) upon the same conditions. Thus, presented GQDs modification with urea seems like a promising approach for the production of the efficient photosensitizer. On the opposite, GQDs-TU are efficient . OH quencher. Due to high singlet oxygen production and low cytotoxicity below 100 mu g/mL against HeLa cells, GQDs-U is a good candidate as an agent in photodynamic therapy at this concentration.
PB  - Elsevier, Amsterdam
T2  - Materials Science & Engineering C-Materials for Biological Applications
T1  - Graphene quantum dots as singlet oxygen producer or radical quencher The matter of functionalization with urea/thiourea
VL  - 109
DO  - 10.1016/j.msec.2019.110539
ER  - 

@article{
author = "Jovanović, Svetlana P. and Syrgiannis, Zois and Budimir, Milica D. and Milivojević, Dušan D. and Jovanović, Dragana J. and Pavlović, Vladimir and Papan, Jelena M. and Bartenwerfer, Malte and Mojsin, Marija M. and Stevanović, Milena J. and Todorović-Marković, Biljana",
year = "2020",
abstract = "Due to their low cost and possible green synthesis, high stability and resistance to photobleaching, graphene quantum dots (GQDs) can be considered as one of the class of carbon nanomaterials which may have great potential as an agent for photosensitized oxygen activation. In such a way, GQDs can be used as a theranostic agent in photodynamic therapy. In this work pristine GQDs, GQDs irradiated with gamma rays and GQDs doped with N and N, S atoms are produced using a simple, green approach. By using different techniques (AFM, HRTEM, SEM-EDS, FTIR, XRD, PL and UV-Vis) we investigated structural and optical properties of the new types of GQDs. We showed that GQDs functionalized with thiourea (GQDs-TU) completely lost the ability to produce singlet oxygen (O-1(2)) upon photoexcitation while functionalization with urea (GQDs-U) improves the capability of GQDs to produce O-1(2) upon the same conditions. Thus, presented GQDs modification with urea seems like a promising approach for the production of the efficient photosensitizer. On the opposite, GQDs-TU are efficient . OH quencher. Due to high singlet oxygen production and low cytotoxicity below 100 mu g/mL against HeLa cells, GQDs-U is a good candidate as an agent in photodynamic therapy at this concentration.",
publisher = "Elsevier, Amsterdam",
journal = "Materials Science & Engineering C-Materials for Biological Applications",
title = "Graphene quantum dots as singlet oxygen producer or radical quencher The matter of functionalization with urea/thiourea",
volume = "109",
doi = "10.1016/j.msec.2019.110539"
}

Jovanović, S. P., Syrgiannis, Z., Budimir, M. D., Milivojević, D. D., Jovanović, D. J., Pavlović, V., Papan, J. M., Bartenwerfer, M., Mojsin, M. M., Stevanović, M. J.,& Todorović-Marković, B.. (2020). Graphene quantum dots as singlet oxygen producer or radical quencher The matter of functionalization with urea/thiourea. in Materials Science & Engineering C-Materials for Biological Applications
Elsevier, Amsterdam., 109.
https://doi.org/10.1016/j.msec.2019.110539

Jovanović SP, Syrgiannis Z, Budimir MD, Milivojević DD, Jovanović DJ, Pavlović V, Papan JM, Bartenwerfer M, Mojsin MM, Stevanović MJ, Todorović-Marković B. Graphene quantum dots as singlet oxygen producer or radical quencher The matter of functionalization with urea/thiourea. in Materials Science & Engineering C-Materials for Biological Applications. 2020;109.
doi:10.1016/j.msec.2019.110539 .

Jovanović, Svetlana P., Syrgiannis, Zois, Budimir, Milica D., Milivojević, Dušan D., Jovanović, Dragana J., Pavlović, Vladimir, Papan, Jelena M., Bartenwerfer, Malte, Mojsin, Marija M., Stevanović, Milena J., Todorović-Marković, Biljana, "Graphene quantum dots as singlet oxygen producer or radical quencher The matter of functionalization with urea/thiourea" in Materials Science & Engineering C-Materials for Biological Applications, 109 (2020),
https://doi.org/10.1016/j.msec.2019.110539 . .

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  - Vranjes, M.
AU  - Kuljanin-Jakovljević, J.
AU  - Milošević, M.
AU  - Ćirić-Marjanović, G.
AU  - Stoiljković, M.
AU  - Konstantinović, Z.
AU  - Pavlović, Vladimir
AU  - Milivojević, Dušan D.
AU  - Saponjić, Z.
PY  - 2019
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4934
AB  - Hydrothermal synthesis of Mn2+ doped titanate nanotubes (TNTs), which exhibited room temperature ferromagnetism (RTFM), is reported. Dispersions of 1 and 5 at.% Mn2+ doped anatase TiO2 nanocrystals were used as precursors. Size and shape of Mn2+ doped TNTs and precursor nanocrystals were studied by transmission electron microscopy (TEM). The relatively uniform size distribution of transverse dimension of nanotubes of about 10 nm was observed while their lengths varied up to few hundred nanometers. The X-Ray Diffraction (XRD) analysis and Raman spectroscopy of resultant powder confirmed the hydrogen dititanate (H2Ti2O5 x H2O) crystal phase of Mn2+ doped TNTs with the presence of small amount of sodium titanates. Electron paramagnetic resonance (EPR) experiments were performed to probe the local atomic and electronic structure of Mn in the nanotubes. Room temperature ferromagnetic ordering with saturation magnetic moment (M-s) in the range of 0.6-1.5 mu(B) per Mn atom was observed.
PB  - Elsevier Science Bv, Amsterdam
T2  - Solid State Sciences
T1  - Hydrothermal synthesis of Mn2+ doped titanate nanotubes: Investigation of their structure and room temperature ferromagnetic behavior
EP  - 161
SP  - 155
VL  - 94
DO  - 10.1016/j.solidstatesciences.2019.06.008
ER  - 

@article{
author = "Vranjes, M. and Kuljanin-Jakovljević, J. and Milošević, M. and Ćirić-Marjanović, G. and Stoiljković, M. and Konstantinović, Z. and Pavlović, Vladimir and Milivojević, Dušan D. and Saponjić, Z.",
year = "2019",
abstract = "Hydrothermal synthesis of Mn2+ doped titanate nanotubes (TNTs), which exhibited room temperature ferromagnetism (RTFM), is reported. Dispersions of 1 and 5 at.% Mn2+ doped anatase TiO2 nanocrystals were used as precursors. Size and shape of Mn2+ doped TNTs and precursor nanocrystals were studied by transmission electron microscopy (TEM). The relatively uniform size distribution of transverse dimension of nanotubes of about 10 nm was observed while their lengths varied up to few hundred nanometers. The X-Ray Diffraction (XRD) analysis and Raman spectroscopy of resultant powder confirmed the hydrogen dititanate (H2Ti2O5 x H2O) crystal phase of Mn2+ doped TNTs with the presence of small amount of sodium titanates. Electron paramagnetic resonance (EPR) experiments were performed to probe the local atomic and electronic structure of Mn in the nanotubes. Room temperature ferromagnetic ordering with saturation magnetic moment (M-s) in the range of 0.6-1.5 mu(B) per Mn atom was observed.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Solid State Sciences",
title = "Hydrothermal synthesis of Mn2+ doped titanate nanotubes: Investigation of their structure and room temperature ferromagnetic behavior",
pages = "161-155",
volume = "94",
doi = "10.1016/j.solidstatesciences.2019.06.008"
}

Vranjes, M., Kuljanin-Jakovljević, J., Milošević, M., Ćirić-Marjanović, G., Stoiljković, M., Konstantinović, Z., Pavlović, V., Milivojević, D. D.,& Saponjić, Z.. (2019). Hydrothermal synthesis of Mn2+ doped titanate nanotubes: Investigation of their structure and room temperature ferromagnetic behavior. in Solid State Sciences
Elsevier Science Bv, Amsterdam., 94, 155-161.
https://doi.org/10.1016/j.solidstatesciences.2019.06.008

Vranjes M, Kuljanin-Jakovljević J, Milošević M, Ćirić-Marjanović G, Stoiljković M, Konstantinović Z, Pavlović V, Milivojević DD, Saponjić Z. Hydrothermal synthesis of Mn2+ doped titanate nanotubes: Investigation of their structure and room temperature ferromagnetic behavior. in Solid State Sciences. 2019;94:155-161.
doi:10.1016/j.solidstatesciences.2019.06.008 .

Vranjes, M., Kuljanin-Jakovljević, J., Milošević, M., Ćirić-Marjanović, G., Stoiljković, M., Konstantinović, Z., Pavlović, Vladimir, Milivojević, Dušan D., Saponjić, Z., "Hydrothermal synthesis of Mn2+ doped titanate nanotubes: Investigation of their structure and room temperature ferromagnetic behavior" in Solid State Sciences, 94 (2019):155-161,
https://doi.org/10.1016/j.solidstatesciences.2019.06.008 . .

TY  - JOUR
AU  - Marković, Zoran M.
AU  - Jovanović, Svetlana P.
AU  - Masković, Pavle Z.
AU  - Danko, Martin
AU  - Micusik, Matej
AU  - Pavlović, Vladimir
AU  - Milivojević, Dušan D.
AU  - Kleinova, Angela
AU  - Spitalsky, Zdeno
AU  - Todorović-Marković, Biljana
PY  - 2018
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4630
AB  - Due to controversial reports concerning antibacterial activity of different graphene based materials it is very important to investigate their antibacterial action on a wide range of Gram-positive and Gram-negative bacteria. In this paper we have investigated the structure induced phototoxic antibacterial activity of four types of graphene based materials: graphene oxide (GO), graphene quantum dots (GQDs), carbon quantum dots (CQDs) and nitrogen doped carbon quantum dots (N-CQDs). Antibacterial activity was tested on 19 types of bacteria. It is found that nanometer-size CQDs and N-CQDs are the most potent agents whereas micrometer-size GO has very poor antibacterial activity. Electron paramagnetic resonance measurements confirmed photodynamic production of singlet oxygen for all types of used quantum dots. Detailed analysis has shown that N-CQDs are an excellent photodynamic antibacterial agent for treatment of bacterial infections induced by Enterobacter aerogenes (E. aerogenes), Proteus mirabilis (P. mirabilis), Staphylococcus saprophyticus (S. saprophyticus), Listeria monocytogenes (L. monocytogenes), Salmonella typhimurium (S. typhimurium) and Klebsiella pneumoniae.
PB  - Royal Soc Chemistry, Cambridge
T2  - RSC Advances
T1  - Photo-induced antibacterial activity of four graphene based nanomaterials on a wide range of bacteria
EP  - 31347
IS  - 55
SP  - 31337
VL  - 8
DO  - 10.1039/c8ra04664f
ER  - 

@article{
author = "Marković, Zoran M. and Jovanović, Svetlana P. and Masković, Pavle Z. and Danko, Martin and Micusik, Matej and Pavlović, Vladimir and Milivojević, Dušan D. and Kleinova, Angela and Spitalsky, Zdeno and Todorović-Marković, Biljana",
year = "2018",
abstract = "Due to controversial reports concerning antibacterial activity of different graphene based materials it is very important to investigate their antibacterial action on a wide range of Gram-positive and Gram-negative bacteria. In this paper we have investigated the structure induced phototoxic antibacterial activity of four types of graphene based materials: graphene oxide (GO), graphene quantum dots (GQDs), carbon quantum dots (CQDs) and nitrogen doped carbon quantum dots (N-CQDs). Antibacterial activity was tested on 19 types of bacteria. It is found that nanometer-size CQDs and N-CQDs are the most potent agents whereas micrometer-size GO has very poor antibacterial activity. Electron paramagnetic resonance measurements confirmed photodynamic production of singlet oxygen for all types of used quantum dots. Detailed analysis has shown that N-CQDs are an excellent photodynamic antibacterial agent for treatment of bacterial infections induced by Enterobacter aerogenes (E. aerogenes), Proteus mirabilis (P. mirabilis), Staphylococcus saprophyticus (S. saprophyticus), Listeria monocytogenes (L. monocytogenes), Salmonella typhimurium (S. typhimurium) and Klebsiella pneumoniae.",
publisher = "Royal Soc Chemistry, Cambridge",
journal = "RSC Advances",
title = "Photo-induced antibacterial activity of four graphene based nanomaterials on a wide range of bacteria",
pages = "31347-31337",
number = "55",
volume = "8",
doi = "10.1039/c8ra04664f"
}

Marković, Z. M., Jovanović, S. P., Masković, P. Z., Danko, M., Micusik, M., Pavlović, V., Milivojević, D. D., Kleinova, A., Spitalsky, Z.,& Todorović-Marković, B.. (2018). Photo-induced antibacterial activity of four graphene based nanomaterials on a wide range of bacteria. in RSC Advances
Royal Soc Chemistry, Cambridge., 8(55), 31337-31347.
https://doi.org/10.1039/c8ra04664f

Marković ZM, Jovanović SP, Masković PZ, Danko M, Micusik M, Pavlović V, Milivojević DD, Kleinova A, Spitalsky Z, Todorović-Marković B. Photo-induced antibacterial activity of four graphene based nanomaterials on a wide range of bacteria. in RSC Advances. 2018;8(55):31337-31347.
doi:10.1039/c8ra04664f .

Marković, Zoran M., Jovanović, Svetlana P., Masković, Pavle Z., Danko, Martin, Micusik, Matej, Pavlović, Vladimir, Milivojević, Dušan D., Kleinova, Angela, Spitalsky, Zdeno, Todorović-Marković, Biljana, "Photo-induced antibacterial activity of four graphene based nanomaterials on a wide range of bacteria" in RSC Advances, 8, no. 55 (2018):31337-31347,
https://doi.org/10.1039/c8ra04664f . .

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, Zoran M.
AU  - Matijašević, Danka
AU  - Pavlović, Vladimir
AU  - Jovanović, Svetlana P.
AU  - Holclajtner-Antunović, Ivanka
AU  - Spitalsky, Zdenko
AU  - Micusik, Matej
AU  - Dramicanin, Miroslav D.
AU  - Milivojević, Dušan D.
AU  - Nikšić, Miomir
AU  - Todorović-Marković, Biljana
PY  - 2017
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4348
AB  - Electrochemically exfoliated graphene is functionalized graphene with potential application in biomedicine. Two most relevant biological features of this material are its electrical conductivity and excellent water dispersibility. In this study we have tried to establish the correlation between graphene structure and its antibacterial properties. The exfoliation process was performed in a two electrode-highly oriented pyrolytic graphite electrochemical cell. Solution of ammonium persulfate was used as an electrolyte. Exfoliated graphene sheets were dispersed in aqueous media and characterized by atomic force microscopy, scanning electron microscopy, Raman spectroscopy, Fourier transform infrared spectroscopy, X photoelectron spectroscopy, X-ray diffraction, electron paramagnetic resonance, zeta potential, contact angle measurements and surface energy. Antibacterial assays have shown lack of the significant antibacterial activity. Major effect on bacteria was slight change of bacteria morphology. Membrane remained intact despite significant change of chemical content of membrane components.
PB  - Academic Press Inc Elsevier Science, San Diego
T2  - Journal of Colloid and Interface Science
T1  - Antibacterial potential of electrochemically exfoliated graphene sheets
EP  - 43
SP  - 30
VL  - 500
DO  - 10.1016/j.jcis.2017.03.110
ER  - 

@article{
author = "Marković, Zoran M. and Matijašević, Danka and Pavlović, Vladimir and Jovanović, Svetlana P. and Holclajtner-Antunović, Ivanka and Spitalsky, Zdenko and Micusik, Matej and Dramicanin, Miroslav D. and Milivojević, Dušan D. and Nikšić, Miomir and Todorović-Marković, Biljana",
year = "2017",
abstract = "Electrochemically exfoliated graphene is functionalized graphene with potential application in biomedicine. Two most relevant biological features of this material are its electrical conductivity and excellent water dispersibility. In this study we have tried to establish the correlation between graphene structure and its antibacterial properties. The exfoliation process was performed in a two electrode-highly oriented pyrolytic graphite electrochemical cell. Solution of ammonium persulfate was used as an electrolyte. Exfoliated graphene sheets were dispersed in aqueous media and characterized by atomic force microscopy, scanning electron microscopy, Raman spectroscopy, Fourier transform infrared spectroscopy, X photoelectron spectroscopy, X-ray diffraction, electron paramagnetic resonance, zeta potential, contact angle measurements and surface energy. Antibacterial assays have shown lack of the significant antibacterial activity. Major effect on bacteria was slight change of bacteria morphology. Membrane remained intact despite significant change of chemical content of membrane components.",
publisher = "Academic Press Inc Elsevier Science, San Diego",
journal = "Journal of Colloid and Interface Science",
title = "Antibacterial potential of electrochemically exfoliated graphene sheets",
pages = "43-30",
volume = "500",
doi = "10.1016/j.jcis.2017.03.110"
}

Marković, Z. M., Matijašević, D., Pavlović, V., Jovanović, S. P., Holclajtner-Antunović, I., Spitalsky, Z., Micusik, M., Dramicanin, M. D., Milivojević, D. D., Nikšić, M.,& Todorović-Marković, B.. (2017). Antibacterial potential of electrochemically exfoliated graphene sheets. in Journal of Colloid and Interface Science
Academic Press Inc Elsevier Science, San Diego., 500, 30-43.
https://doi.org/10.1016/j.jcis.2017.03.110

Marković ZM, Matijašević D, Pavlović V, Jovanović SP, Holclajtner-Antunović I, Spitalsky Z, Micusik M, Dramicanin MD, Milivojević DD, Nikšić M, Todorović-Marković B. Antibacterial potential of electrochemically exfoliated graphene sheets. in Journal of Colloid and Interface Science. 2017;500:30-43.
doi:10.1016/j.jcis.2017.03.110 .

Marković, Zoran M., Matijašević, Danka, Pavlović, Vladimir, Jovanović, Svetlana P., Holclajtner-Antunović, Ivanka, Spitalsky, Zdenko, Micusik, Matej, Dramicanin, Miroslav D., Milivojević, Dušan D., Nikšić, Miomir, Todorović-Marković, Biljana, "Antibacterial potential of electrochemically exfoliated graphene sheets" in Journal of Colloid and Interface Science, 500 (2017):30-43,
https://doi.org/10.1016/j.jcis.2017.03.110 . .

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 . .