TY  - JOUR
AU  - Pavlović, Vera P.
AU  - Tošić, Dragana
AU  - Dojćilović, Radovan
AU  - Dudić, Duško
AU  - Dramićanin, Miroslav D.
AU  - Medić, Mina
AU  - McPherson, Michael M.
AU  - Pavlović, Vladimir
AU  - Vlahović, Branislav
AU  - Djoković, Vladimir
PY  - 2021
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5808
AB  - Na0.25K0.25Bi0.5TiO3 (NKBT) perovskite particles are synthesized by solid-state method and used as a filler for polyvinylidene fluoride-co-hexafluoropropylene (PVDF-HFP) co-polymer. X-ray diffraction analysis of NKBT powders shows that the particles have a rhombohedral perovskite crystal structure (R3c symmetry). Raman spectroscopy reveals that the co-polymer crystallizes predominantly into the mixture of polar β- and γ-crystals, while there is also a contribution of the non-polar α-crystal phase. The introduction of the NKBT into the PVDF-HFP results with an increase in effective dielectric permittivity and this effect depends on the inorganic content in the composite. The most interesting result of the present study is that the introduction of NKBT particles induces the appearance of an additional transition peak in the dielectric spectra of the co-polymer matrix. At the fixed frequency of ~2 kHz, the observed process appears at ~10 °C (about 45° above the glass transition temperature) and its magnitude strongly depends on the amount of the NKBT in the composite. Dielectric spectroscopy measurements of the composites are carried out in the wide range of frequencies (from 0.1 Hz to 1 MHz) and temperatures (from −100 to 100 °C). They reveal that the novel process can be clearly distinguished in the frequency range between 160 Hz and ~50 kHz.
PB  - Elsevier Ltd
T2  - Polymer Testing
T1  - PVDF-HFP/NKBT composite dielectrics: Perovskite particles induce the appearance of an additional dielectric relaxation process in ferroelectric polymer matrix
SP  - 107093
VL  - 96
DO  - 10.1016/j.polymertesting.2021.107093
ER  - 

@article{
author = "Pavlović, Vera P. and Tošić, Dragana and Dojćilović, Radovan and Dudić, Duško and Dramićanin, Miroslav D. and Medić, Mina and McPherson, Michael M. and Pavlović, Vladimir and Vlahović, Branislav and Djoković, Vladimir",
year = "2021",
abstract = "Na0.25K0.25Bi0.5TiO3 (NKBT) perovskite particles are synthesized by solid-state method and used as a filler for polyvinylidene fluoride-co-hexafluoropropylene (PVDF-HFP) co-polymer. X-ray diffraction analysis of NKBT powders shows that the particles have a rhombohedral perovskite crystal structure (R3c symmetry). Raman spectroscopy reveals that the co-polymer crystallizes predominantly into the mixture of polar β- and γ-crystals, while there is also a contribution of the non-polar α-crystal phase. The introduction of the NKBT into the PVDF-HFP results with an increase in effective dielectric permittivity and this effect depends on the inorganic content in the composite. The most interesting result of the present study is that the introduction of NKBT particles induces the appearance of an additional transition peak in the dielectric spectra of the co-polymer matrix. At the fixed frequency of ~2 kHz, the observed process appears at ~10 °C (about 45° above the glass transition temperature) and its magnitude strongly depends on the amount of the NKBT in the composite. Dielectric spectroscopy measurements of the composites are carried out in the wide range of frequencies (from 0.1 Hz to 1 MHz) and temperatures (from −100 to 100 °C). They reveal that the novel process can be clearly distinguished in the frequency range between 160 Hz and ~50 kHz.",
publisher = "Elsevier Ltd",
journal = "Polymer Testing",
title = "PVDF-HFP/NKBT composite dielectrics: Perovskite particles induce the appearance of an additional dielectric relaxation process in ferroelectric polymer matrix",
pages = "107093",
volume = "96",
doi = "10.1016/j.polymertesting.2021.107093"
}

Pavlović, V. P., Tošić, D., Dojćilović, R., Dudić, D., Dramićanin, M. D., Medić, M., McPherson, M. M., Pavlović, V., Vlahović, B.,& Djoković, V.. (2021). PVDF-HFP/NKBT composite dielectrics: Perovskite particles induce the appearance of an additional dielectric relaxation process in ferroelectric polymer matrix. in Polymer Testing
Elsevier Ltd., 96, 107093.
https://doi.org/10.1016/j.polymertesting.2021.107093

Pavlović VP, Tošić D, Dojćilović R, Dudić D, Dramićanin MD, Medić M, McPherson MM, Pavlović V, Vlahović B, Djoković V. PVDF-HFP/NKBT composite dielectrics: Perovskite particles induce the appearance of an additional dielectric relaxation process in ferroelectric polymer matrix. in Polymer Testing. 2021;96:107093.
doi:10.1016/j.polymertesting.2021.107093 .

Pavlović, Vera P., Tošić, Dragana, Dojćilović, Radovan, Dudić, Duško, Dramićanin, Miroslav D., Medić, Mina, McPherson, Michael M., Pavlović, Vladimir, Vlahović, Branislav, Djoković, Vladimir, "PVDF-HFP/NKBT composite dielectrics: Perovskite particles induce the appearance of an additional dielectric relaxation process in ferroelectric polymer matrix" in Polymer Testing, 96 (2021):107093,
https://doi.org/10.1016/j.polymertesting.2021.107093 . .

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  - Dojčilović, Radovan
AU  - Pajović, Jelena D.
AU  - Božanić, Dušan K.
AU  - Jović, Nataša
AU  - Pavlović, Vera P.
AU  - Pavlović, Vladimir
AU  - Lenhardt-Acković, Lea
AU  - Zeković, Ivana
AU  - Dramicanin, Miroslav D.
AU  - Kascakova, Slavka
AU  - Refregiers, Matthieu
AU  - Rasić, Goran
AU  - Vlahović, Branislav
AU  - Djoković, Vladimir
PY  - 2018
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4655
AB  - The interaction of partially reduced graphene oxide (prGO) and Huh7.5.1 liver cancer cells was investigated by means of DUV fluorescence bioimaging. The prGO sample was obtained by the reduction (to a certain extent) of the initially prepared graphene oxide (GO) nanosheets with hydrazine. The fluorescence of the GO nanosheets increases with time of the reduction due to a change in ratio of the sp(2) and sp(3) carbon sites and the prGO sample was extracted from the dispersion after 6 min, when the intensity of the fluorescence reached its maximum. The reduction process was left to proceed further to saturation until highly reduced graphene oxide (denoted here as rGO) was obtained. GO, prGO and rGO samples were investigated by structural (scanning electron microscopy (SEM), scanning transmission electron microscopy coupled with energy dispersive spectrometry (STEM-EDS)) and spectroscopic (UV-vis, photoluminescence (PL), Raman) methods. After that, Huh7.5.1 cells were incubated with GO, prGO and rGO nanosheets and used in bioimaging studies, which were performed on DISCO beamline of synchrotron SOLEIL. It was found that the prGO significantly enhanced the fluorescence of the cells and increased the intensity of the signal by similar to 2.5 times. Time-lapse fluorescence microscopy experiments showed that fluorescence dynamics strongly depends on the type of nanosheets used. The obtained prGO nanostructure can be easily conjugated with aromatic ring containing drugs, which opens a possibility for its applications in fluorescence microscopy monitored drug delivery.
PB  - IOP Publishing Ltd, Bristol
T2  - 2d Materials
T1  - DUV fluorescence bioimaging study of the interaction of partially reduced graphene oxide and liver cancer cells
IS  - 4
VL  - 5
DO  - 10.1088/2053-1583/aad72b
ER  - 

@article{
author = "Dojčilović, Radovan and Pajović, Jelena D. and Božanić, Dušan K. and Jović, Nataša and Pavlović, Vera P. and Pavlović, Vladimir and Lenhardt-Acković, Lea and Zeković, Ivana and Dramicanin, Miroslav D. and Kascakova, Slavka and Refregiers, Matthieu and Rasić, Goran and Vlahović, Branislav and Djoković, Vladimir",
year = "2018",
abstract = "The interaction of partially reduced graphene oxide (prGO) and Huh7.5.1 liver cancer cells was investigated by means of DUV fluorescence bioimaging. The prGO sample was obtained by the reduction (to a certain extent) of the initially prepared graphene oxide (GO) nanosheets with hydrazine. The fluorescence of the GO nanosheets increases with time of the reduction due to a change in ratio of the sp(2) and sp(3) carbon sites and the prGO sample was extracted from the dispersion after 6 min, when the intensity of the fluorescence reached its maximum. The reduction process was left to proceed further to saturation until highly reduced graphene oxide (denoted here as rGO) was obtained. GO, prGO and rGO samples were investigated by structural (scanning electron microscopy (SEM), scanning transmission electron microscopy coupled with energy dispersive spectrometry (STEM-EDS)) and spectroscopic (UV-vis, photoluminescence (PL), Raman) methods. After that, Huh7.5.1 cells were incubated with GO, prGO and rGO nanosheets and used in bioimaging studies, which were performed on DISCO beamline of synchrotron SOLEIL. It was found that the prGO significantly enhanced the fluorescence of the cells and increased the intensity of the signal by similar to 2.5 times. Time-lapse fluorescence microscopy experiments showed that fluorescence dynamics strongly depends on the type of nanosheets used. The obtained prGO nanostructure can be easily conjugated with aromatic ring containing drugs, which opens a possibility for its applications in fluorescence microscopy monitored drug delivery.",
publisher = "IOP Publishing Ltd, Bristol",
journal = "2d Materials",
title = "DUV fluorescence bioimaging study of the interaction of partially reduced graphene oxide and liver cancer cells",
number = "4",
volume = "5",
doi = "10.1088/2053-1583/aad72b"
}

Dojčilović, R., Pajović, J. D., Božanić, D. K., Jović, N., Pavlović, V. P., Pavlović, V., Lenhardt-Acković, L., Zeković, I., Dramicanin, M. D., Kascakova, S., Refregiers, M., Rasić, G., Vlahović, B.,& Djoković, V.. (2018). DUV fluorescence bioimaging study of the interaction of partially reduced graphene oxide and liver cancer cells. in 2d Materials
IOP Publishing Ltd, Bristol., 5(4).
https://doi.org/10.1088/2053-1583/aad72b

Dojčilović R, Pajović JD, Božanić DK, Jović N, Pavlović VP, Pavlović V, Lenhardt-Acković L, Zeković I, Dramicanin MD, Kascakova S, Refregiers M, Rasić G, Vlahović B, Djoković V. DUV fluorescence bioimaging study of the interaction of partially reduced graphene oxide and liver cancer cells. in 2d Materials. 2018;5(4).
doi:10.1088/2053-1583/aad72b .

Dojčilović, Radovan, Pajović, Jelena D., Božanić, Dušan K., Jović, Nataša, Pavlović, Vera P., Pavlović, Vladimir, Lenhardt-Acković, Lea, Zeković, Ivana, Dramicanin, Miroslav D., Kascakova, Slavka, Refregiers, Matthieu, Rasić, Goran, Vlahović, Branislav, Djoković, Vladimir, "DUV fluorescence bioimaging study of the interaction of partially reduced graphene oxide and liver cancer cells" in 2d Materials, 5, no. 4 (2018),
https://doi.org/10.1088/2053-1583/aad72b . .

TY  - JOUR
AU  - Peles, A.
AU  - Aleksić, O.
AU  - Pavlović, Vera P.
AU  - Djoković, Vladimir
AU  - Dojčilović, Radovan
AU  - Nikolić, Z.
AU  - Marinković, F.
AU  - Mitrić, M.
AU  - Blagojević, Vladimir A.
AU  - Vlahović, Branislav
AU  - Pavlović, Vladimir
PY  - 2018
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4658
AB  - The influence of the mechanical activation of ZnO nanoparticle fillers on the structural and electrical properties of the matrix of poly(vinylidenefluoride)-ZnO (PVDF-ZnO) films was investigated. Transmission electron microscopy and scanning electron microscopy analyses showed that mechanical activation in a high energy planetary ball mill reduces the size of ZnO particles. X-ray diffraction and Raman spectroscopy revealed that PVDF crystallized predominantly as the gamma-phase. Non-activated ZnO filler reduces the degree of the crystallinity of the matrix and promotes crystallization of alpha-phase of PVDF in the film, while the fillers activated for 5 and 10 min induce crystallization of beta-phase, indicating that mechanical activation of the filler can be used as a general method for fabrication of PVDF composites with increased content of piezoelectric beta-phase crystals. Dielectric spectroscopy measurements show that polymer composite with the high content of beta-phase (with ZnO filler activated for 5 min) exhibits the highest value of dielectric permittivity in 150-400 K range of temperatures. Kinetic analysis shows combined effects of increased surface area and increased concentration of surface defects on the interactions between polymer chains and activated nanoparticles.
PB  - IOP Publishing Ltd, Bristol
T2  - Physica Scripta
T1  - Structural and electrical properties of ferroelectric poly(vinylidene fluoride) and mechanically activated ZnO nanoparticle composite films
IS  - 10
VL  - 93
DO  - 10.1088/1402-4896/aad749
ER  - 

@article{
author = "Peles, A. and Aleksić, O. and Pavlović, Vera P. and Djoković, Vladimir and Dojčilović, Radovan and Nikolić, Z. and Marinković, F. and Mitrić, M. and Blagojević, Vladimir A. and Vlahović, Branislav and Pavlović, Vladimir",
year = "2018",
abstract = "The influence of the mechanical activation of ZnO nanoparticle fillers on the structural and electrical properties of the matrix of poly(vinylidenefluoride)-ZnO (PVDF-ZnO) films was investigated. Transmission electron microscopy and scanning electron microscopy analyses showed that mechanical activation in a high energy planetary ball mill reduces the size of ZnO particles. X-ray diffraction and Raman spectroscopy revealed that PVDF crystallized predominantly as the gamma-phase. Non-activated ZnO filler reduces the degree of the crystallinity of the matrix and promotes crystallization of alpha-phase of PVDF in the film, while the fillers activated for 5 and 10 min induce crystallization of beta-phase, indicating that mechanical activation of the filler can be used as a general method for fabrication of PVDF composites with increased content of piezoelectric beta-phase crystals. Dielectric spectroscopy measurements show that polymer composite with the high content of beta-phase (with ZnO filler activated for 5 min) exhibits the highest value of dielectric permittivity in 150-400 K range of temperatures. Kinetic analysis shows combined effects of increased surface area and increased concentration of surface defects on the interactions between polymer chains and activated nanoparticles.",
publisher = "IOP Publishing Ltd, Bristol",
journal = "Physica Scripta",
title = "Structural and electrical properties of ferroelectric poly(vinylidene fluoride) and mechanically activated ZnO nanoparticle composite films",
number = "10",
volume = "93",
doi = "10.1088/1402-4896/aad749"
}

Peles, A., Aleksić, O., Pavlović, V. P., Djoković, V., Dojčilović, R., Nikolić, Z., Marinković, F., Mitrić, M., Blagojević, V. A., Vlahović, B.,& Pavlović, V.. (2018). Structural and electrical properties of ferroelectric poly(vinylidene fluoride) and mechanically activated ZnO nanoparticle composite films. in Physica Scripta
IOP Publishing Ltd, Bristol., 93(10).
https://doi.org/10.1088/1402-4896/aad749

Peles A, Aleksić O, Pavlović VP, Djoković V, Dojčilović R, Nikolić Z, Marinković F, Mitrić M, Blagojević VA, Vlahović B, Pavlović V. Structural and electrical properties of ferroelectric poly(vinylidene fluoride) and mechanically activated ZnO nanoparticle composite films. in Physica Scripta. 2018;93(10).
doi:10.1088/1402-4896/aad749 .

Peles, A., Aleksić, O., Pavlović, Vera P., Djoković, Vladimir, Dojčilović, Radovan, Nikolić, Z., Marinković, F., Mitrić, M., Blagojević, Vladimir A., Vlahović, Branislav, Pavlović, Vladimir, "Structural and electrical properties of ferroelectric poly(vinylidene fluoride) and mechanically activated ZnO nanoparticle composite films" in Physica Scripta, 93, no. 10 (2018),
https://doi.org/10.1088/1402-4896/aad749 . .

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  - Carević, M.V.
AU  - Abazović, N.D.
AU  - Novaković, T.B.
AU  - Pavlović, Vladimir
AU  - Comor, Mirjana I.
PY  - 2016
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4056
AB  - We present a hydrothermal method for synthesis of zirconia nanopowders: pure and with incorporated Si4+ ions. Zirconyl chloride and tetraethyl orthosilicate were used as precursors. As prepared powders were annealed at 600 degrees C and characterized using structural (XRD), morphological (SEM and TEM) and optical techniques (UV/vis DR, FTIR and photoluminescence spectroscopy). Their textural properties (BET method) and photocatalytic activity toward degradation of model compounds (tricholophenol and Rhodamine B) using simmulated solar light were obtained. We showed that by using hydrothermal synthesis method pure monoclinic ZrO2 highly crystalline powder can be obtained. Incorporation of Si4+ ions induced stabilization of tetragonal crystalline phase at room temperature and decreasing of particle sizes. Incorporation of Si4+ ions in zirconia matrix also resulted in increase of specific area of nanopowders. FTIR measurements were used as proof for existence of Zr-O-Si bond. Effective band gap of zirconia powders was reduced from 5 (pure ZrO2) to 3.8 eV for samples with Si4+ ions. All zirconia powders showed significant photocatalytic activity regarding degradation of triclorophenol and no activity regarding RB (Rhodamine B dye). Photocatalytic activity of zirconia was increased by incorporation of Si ions in the host matrix. The source of this observation is discussed correlating all obtained properties of pure and Si-incorporated nanopowders. Optimization of synthesis parameters and composition of zirconia samples obviously can lead to their photocatalytic activity comparable to Degussa TiO2 powder, famous and commercial photocatalyst.
PB  - Elsevier Science Bv, Amsterdam
T2  - Applied Catalysis B-Environmental
T1  - Zirconium dioxide nanopowders with incorporated Si4+ ions as efficient photocatalyst for degradation of trichlorophenol using simulated solar light.
EP  - 120
SP  - 112
VL  - 195
DO  - 10.1016/j.apcatb.2016.05.005
ER  - 

@article{
author = "Carević, M.V. and Abazović, N.D. and Novaković, T.B. and Pavlović, Vladimir and Comor, Mirjana I.",
year = "2016",
abstract = "We present a hydrothermal method for synthesis of zirconia nanopowders: pure and with incorporated Si4+ ions. Zirconyl chloride and tetraethyl orthosilicate were used as precursors. As prepared powders were annealed at 600 degrees C and characterized using structural (XRD), morphological (SEM and TEM) and optical techniques (UV/vis DR, FTIR and photoluminescence spectroscopy). Their textural properties (BET method) and photocatalytic activity toward degradation of model compounds (tricholophenol and Rhodamine B) using simmulated solar light were obtained. We showed that by using hydrothermal synthesis method pure monoclinic ZrO2 highly crystalline powder can be obtained. Incorporation of Si4+ ions induced stabilization of tetragonal crystalline phase at room temperature and decreasing of particle sizes. Incorporation of Si4+ ions in zirconia matrix also resulted in increase of specific area of nanopowders. FTIR measurements were used as proof for existence of Zr-O-Si bond. Effective band gap of zirconia powders was reduced from 5 (pure ZrO2) to 3.8 eV for samples with Si4+ ions. All zirconia powders showed significant photocatalytic activity regarding degradation of triclorophenol and no activity regarding RB (Rhodamine B dye). Photocatalytic activity of zirconia was increased by incorporation of Si ions in the host matrix. The source of this observation is discussed correlating all obtained properties of pure and Si-incorporated nanopowders. Optimization of synthesis parameters and composition of zirconia samples obviously can lead to their photocatalytic activity comparable to Degussa TiO2 powder, famous and commercial photocatalyst.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Applied Catalysis B-Environmental",
title = "Zirconium dioxide nanopowders with incorporated Si4+ ions as efficient photocatalyst for degradation of trichlorophenol using simulated solar light.",
pages = "120-112",
volume = "195",
doi = "10.1016/j.apcatb.2016.05.005"
}

Carević, M.V., Abazović, N.D., Novaković, T.B., Pavlović, V.,& Comor, M. I.. (2016). Zirconium dioxide nanopowders with incorporated Si4+ ions as efficient photocatalyst for degradation of trichlorophenol using simulated solar light.. in Applied Catalysis B-Environmental
Elsevier Science Bv, Amsterdam., 195, 112-120.
https://doi.org/10.1016/j.apcatb.2016.05.005

Carević M, Abazović N, Novaković T, Pavlović V, Comor MI. Zirconium dioxide nanopowders with incorporated Si4+ ions as efficient photocatalyst for degradation of trichlorophenol using simulated solar light.. in Applied Catalysis B-Environmental. 2016;195:112-120.
doi:10.1016/j.apcatb.2016.05.005 .

Carević, M.V., Abazović, N.D., Novaković, T.B., Pavlović, Vladimir, Comor, Mirjana I., "Zirconium dioxide nanopowders with incorporated Si4+ ions as efficient photocatalyst for degradation of trichlorophenol using simulated solar light." in Applied Catalysis B-Environmental, 195 (2016):112-120,
https://doi.org/10.1016/j.apcatb.2016.05.005 . .

TY  - JOUR
AU  - Savić, Tatjana D.
AU  - Comor, Mirjana I.
AU  - Nedeljković, Jovan M.
AU  - Veljković, Dušan Z.
AU  - Zarić, Snežana D.
AU  - Rakić, Vesna
AU  - Janković, Ivana A.
PY  - 2014
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3458
AB  - The surface modification of nanocrystalline TiO2 particles (45 angstrom) with catecholate-type ligands having different electron donating/electron withdrawing substituent groups, specifically 3-methylcatechol, 4-methylcatechol, 3-methoxycatechol, 3,4-dihydroxybenzaldehyde and 4-nitrocatechol, was found to alter the optical properties of nanoparticles in a similar way to catechol. The formation of the inner-sphere charge-transfer (CT) complexes results in a red shift of the semiconductor absorption compared to unmodified nanocrystallites and a reduction of the effective band gap, being slightly less pronounced in the case of electron withdrawing substituents. The investigated ligands have the optimal geometry for binding to surface Ti atoms, resulting in ring coordination complexes of the catecholate type (binuclear bidentate binding-bridging) thus restoring six-coordinated octahedral geometry of surface Ti atoms. From the absorption measurements (Benesi-Hildebrand plot), the stability constants in methanol/water = 90/10 solutions at pH 2 in the order of 10(3) M-1 have been determined. The binding structures were investigated by using FTIR spectroscopy. Thermal stability of CT-complexes was investigated by using TG/DSC/MS analysis. Quantum chemical calculations on model systems using density functional theory (DFT) were performed to obtain the vibrational frequencies of charge transfer complexes, and the calculated values were compared with the experimental data.
PB  - Royal Soc Chemistry, Cambridge
T2  - Physical Chemistry Chemical Physics
T1  - The effect of substituents on the surface modification of anatase nanoparticles with catecholate-type ligands: a combined DFT and experimental study
EP  - 20805
IS  - 38
SP  - 20796
VL  - 16
DO  - 10.1039/c4cp02197e
ER  - 

@article{
author = "Savić, Tatjana D. and Comor, Mirjana I. and Nedeljković, Jovan M. and Veljković, Dušan Z. and Zarić, Snežana D. and Rakić, Vesna and Janković, Ivana A.",
year = "2014",
abstract = "The surface modification of nanocrystalline TiO2 particles (45 angstrom) with catecholate-type ligands having different electron donating/electron withdrawing substituent groups, specifically 3-methylcatechol, 4-methylcatechol, 3-methoxycatechol, 3,4-dihydroxybenzaldehyde and 4-nitrocatechol, was found to alter the optical properties of nanoparticles in a similar way to catechol. The formation of the inner-sphere charge-transfer (CT) complexes results in a red shift of the semiconductor absorption compared to unmodified nanocrystallites and a reduction of the effective band gap, being slightly less pronounced in the case of electron withdrawing substituents. The investigated ligands have the optimal geometry for binding to surface Ti atoms, resulting in ring coordination complexes of the catecholate type (binuclear bidentate binding-bridging) thus restoring six-coordinated octahedral geometry of surface Ti atoms. From the absorption measurements (Benesi-Hildebrand plot), the stability constants in methanol/water = 90/10 solutions at pH 2 in the order of 10(3) M-1 have been determined. The binding structures were investigated by using FTIR spectroscopy. Thermal stability of CT-complexes was investigated by using TG/DSC/MS analysis. Quantum chemical calculations on model systems using density functional theory (DFT) were performed to obtain the vibrational frequencies of charge transfer complexes, and the calculated values were compared with the experimental data.",
publisher = "Royal Soc Chemistry, Cambridge",
journal = "Physical Chemistry Chemical Physics",
title = "The effect of substituents on the surface modification of anatase nanoparticles with catecholate-type ligands: a combined DFT and experimental study",
pages = "20805-20796",
number = "38",
volume = "16",
doi = "10.1039/c4cp02197e"
}

Savić, T. D., Comor, M. I., Nedeljković, J. M., Veljković, D. Z., Zarić, S. D., Rakić, V.,& Janković, I. A.. (2014). The effect of substituents on the surface modification of anatase nanoparticles with catecholate-type ligands: a combined DFT and experimental study. in Physical Chemistry Chemical Physics
Royal Soc Chemistry, Cambridge., 16(38), 20796-20805.
https://doi.org/10.1039/c4cp02197e

Savić TD, Comor MI, Nedeljković JM, Veljković DZ, Zarić SD, Rakić V, Janković IA. The effect of substituents on the surface modification of anatase nanoparticles with catecholate-type ligands: a combined DFT and experimental study. in Physical Chemistry Chemical Physics. 2014;16(38):20796-20805.
doi:10.1039/c4cp02197e .

Savić, Tatjana D., Comor, Mirjana I., Nedeljković, Jovan M., Veljković, Dušan Z., Zarić, Snežana D., Rakić, Vesna, Janković, Ivana A., "The effect of substituents on the surface modification of anatase nanoparticles with catecholate-type ligands: a combined DFT and experimental study" in Physical Chemistry Chemical Physics, 16, no. 38 (2014):20796-20805,
https://doi.org/10.1039/c4cp02197e . .

TY  - JOUR
AU  - Mofokeng, Tladi G.
AU  - Luyt, Adriaan S.
AU  - Pavlović, Vera P.
AU  - Pavlović, Vladimir
AU  - Dudić, Dusko
AU  - Vlahović, Branislav
AU  - Djoković, Vladimir
PY  - 2014
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3652
AB  - Nanocomposites of polyvinylidene fluoride/polymethyl methacrylate (PVDF/PMMA) blend and mechanically activated barium titanate (BaTiO3) particles were prepared by melt mixing. Modification of filler by means of mechanical activation has a profound effect on the crystallization of PVDF in the blend matrix. Raman analysis showed that the modified BaTiO3 particles, due to higher specific surfaces, induce, predominantly, the crystallization of the electrically active beta-phase of PVDF, while the initial micron size particles induce the formation of the most common but non-polar alpha-crystal form. The introduction of activated particles reduces the overall crystallinity but slightly affects the crystallization and melting temperatures of the matrix. Dielectric spectroscopy revealed that at fixed filler content the dielectric constant of the blend increases with decreasing of the particle size (increasing of the activation time). A similar trend was observed for the storage moduli in dynamic mechanical analysis; the stiffness of the composite was higher when mechanically activated particles were used.
PB  - Amer Inst Physics, Melville
T2  - Journal of Applied Physics
T1  - Ferroelectric nanocomposites of polyvinylidene fluoride/polymethyl methacrylate blend and BaTiO3 particles: Fabrication of beta-crystal polymorph rich matrix through mechanical activation of the filler
IS  - 8
VL  - 115
DO  - 10.1063/1.4866694
ER  - 

@article{
author = "Mofokeng, Tladi G. and Luyt, Adriaan S. and Pavlović, Vera P. and Pavlović, Vladimir and Dudić, Dusko and Vlahović, Branislav and Djoković, Vladimir",
year = "2014",
abstract = "Nanocomposites of polyvinylidene fluoride/polymethyl methacrylate (PVDF/PMMA) blend and mechanically activated barium titanate (BaTiO3) particles were prepared by melt mixing. Modification of filler by means of mechanical activation has a profound effect on the crystallization of PVDF in the blend matrix. Raman analysis showed that the modified BaTiO3 particles, due to higher specific surfaces, induce, predominantly, the crystallization of the electrically active beta-phase of PVDF, while the initial micron size particles induce the formation of the most common but non-polar alpha-crystal form. The introduction of activated particles reduces the overall crystallinity but slightly affects the crystallization and melting temperatures of the matrix. Dielectric spectroscopy revealed that at fixed filler content the dielectric constant of the blend increases with decreasing of the particle size (increasing of the activation time). A similar trend was observed for the storage moduli in dynamic mechanical analysis; the stiffness of the composite was higher when mechanically activated particles were used.",
publisher = "Amer Inst Physics, Melville",
journal = "Journal of Applied Physics",
title = "Ferroelectric nanocomposites of polyvinylidene fluoride/polymethyl methacrylate blend and BaTiO3 particles: Fabrication of beta-crystal polymorph rich matrix through mechanical activation of the filler",
number = "8",
volume = "115",
doi = "10.1063/1.4866694"
}

Mofokeng, T. G., Luyt, A. S., Pavlović, V. P., Pavlović, V., Dudić, D., Vlahović, B.,& Djoković, V.. (2014). Ferroelectric nanocomposites of polyvinylidene fluoride/polymethyl methacrylate blend and BaTiO3 particles: Fabrication of beta-crystal polymorph rich matrix through mechanical activation of the filler. in Journal of Applied Physics
Amer Inst Physics, Melville., 115(8).
https://doi.org/10.1063/1.4866694

Mofokeng TG, Luyt AS, Pavlović VP, Pavlović V, Dudić D, Vlahović B, Djoković V. Ferroelectric nanocomposites of polyvinylidene fluoride/polymethyl methacrylate blend and BaTiO3 particles: Fabrication of beta-crystal polymorph rich matrix through mechanical activation of the filler. in Journal of Applied Physics. 2014;115(8).
doi:10.1063/1.4866694 .

Mofokeng, Tladi G., Luyt, Adriaan S., Pavlović, Vera P., Pavlović, Vladimir, Dudić, Dusko, Vlahović, Branislav, Djoković, Vladimir, "Ferroelectric nanocomposites of polyvinylidene fluoride/polymethyl methacrylate blend and BaTiO3 particles: Fabrication of beta-crystal polymorph rich matrix through mechanical activation of the filler" in Journal of Applied Physics, 115, no. 8 (2014),
https://doi.org/10.1063/1.4866694 . .

TY  - CONF
AU  - Pavlović, Vera P.
AU  - Pavlović, Vladimir
AU  - Vlahović, Branislav
AU  - Božanić, D.K.
AU  - Pajović, Jelena D.
AU  - Dojčilović, Radovan
AU  - Djoković, Vladimir
PY  - 2013
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3112
AB  - Nanocomposites of electroactive ceramics and ferroelectric polymers exploit favorable features of the matrix polymer and the nanostructured filler to produce new functional materials for pressure and IR sensors. In this study, the influence of mechanical activation of barium titanate (BaTiO3) particles on the structural properties of BaTiO3/polyvinylidene fluoride (PVDF) nanocomposites was investigated. Nanocomposite films were prepared by the solution casting method and characterized by scanning electron microscopy, x-ray diffraction and Raman spectroscopy. It was found that mechanically activated fillers promote the formation of a ferroelectric beta-phase during crystallization of PVDF.
PB  - IOP Publishing Ltd, Bristol
C3  - Physica Scripta
T1  - Structural properties of composites of polyvinylidene fluoride and mechanically activated BaTiO3 particles
VL  - T157
DO  - 10.1088/0031-8949/2013/T157/014006
ER  - 

@conference{
author = "Pavlović, Vera P. and Pavlović, Vladimir and Vlahović, Branislav and Božanić, D.K. and Pajović, Jelena D. and Dojčilović, Radovan and Djoković, Vladimir",
year = "2013",
abstract = "Nanocomposites of electroactive ceramics and ferroelectric polymers exploit favorable features of the matrix polymer and the nanostructured filler to produce new functional materials for pressure and IR sensors. In this study, the influence of mechanical activation of barium titanate (BaTiO3) particles on the structural properties of BaTiO3/polyvinylidene fluoride (PVDF) nanocomposites was investigated. Nanocomposite films were prepared by the solution casting method and characterized by scanning electron microscopy, x-ray diffraction and Raman spectroscopy. It was found that mechanically activated fillers promote the formation of a ferroelectric beta-phase during crystallization of PVDF.",
publisher = "IOP Publishing Ltd, Bristol",
journal = "Physica Scripta",
title = "Structural properties of composites of polyvinylidene fluoride and mechanically activated BaTiO3 particles",
volume = "T157",
doi = "10.1088/0031-8949/2013/T157/014006"
}

Pavlović, V. P., Pavlović, V., Vlahović, B., Božanić, D.K., Pajović, J. D., Dojčilović, R.,& Djoković, V.. (2013). Structural properties of composites of polyvinylidene fluoride and mechanically activated BaTiO3 particles. in Physica Scripta
IOP Publishing Ltd, Bristol., T157.
https://doi.org/10.1088/0031-8949/2013/T157/014006

Pavlović VP, Pavlović V, Vlahović B, Božanić D, Pajović JD, Dojčilović R, Djoković V. Structural properties of composites of polyvinylidene fluoride and mechanically activated BaTiO3 particles. in Physica Scripta. 2013;T157.
doi:10.1088/0031-8949/2013/T157/014006 .

Pavlović, Vera P., Pavlović, Vladimir, Vlahović, Branislav, Božanić, D.K., Pajović, Jelena D., Dojčilović, Radovan, Djoković, Vladimir, "Structural properties of composites of polyvinylidene fluoride and mechanically activated BaTiO3 particles" in Physica Scripta, T157 (2013),
https://doi.org/10.1088/0031-8949/2013/T157/014006 . .