TY  - JOUR
AU  - Ajaj, Ismail
AU  - Assaleh, Fathi H.
AU  - Markovski, Jasmina
AU  - Rančić, Milica
AU  - Brković, Danijela V
AU  - Milčić, Miloš
AU  - Marinković, Aleksandar
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4130
AB  - The state of the tautomeric equilibria of eleven arylazo pyridone dyes was evaluated from UV-Vis absorption spectra with the aid of the quantum mechanical modeling. NMR analysis and theoretical calculations, by using PCM/omega B97X-D/6-311G(d,p) method, confirmed that prepared compounds exist mainly in Hydrazo form. Internal hydrogen bonding in Hydrazo tautomer, analyzed by AIM topological analysis and total electron density at the bond critical point (BCP), confirmed a presence of strong hydrogen bond which contributes to higher stability of Hydrazo form. Linear solvation energy relationships (LSERs) rationalized solvent influence on solvatochromism of all compounds in Hydrazo form and K-T by using Kamlet-Taft model. Linear free energy relationships (LFERs) were applied to the substituent-inducedNMR chemical shifts (SCS) using SSP (single substituent parameter) and DSP (dual substituent parameter) model. Density plots over the highest occupied (HOMO) and lowest unoccupied molecular orbitals (LUMO) energy surface provide information on the charge transfer during excitation. The molecular electrostatic potential (MEP) surface map was plotted over the optimized geometry of the molecules in order to visualize electron density distribution and explain origin of solvent/solute interactions.
PB  - Elsevier, Amsterdam
T2  - Arabian Journal of Chemistry
T1  - Solvatochromism and azo-hydrazo tautomerism of novel arylazo pyridone dyes: Experimental and quantum chemical study
EP  - 3478
IS  - 8
SP  - 3463
VL  - 12
DO  - 10.1016/j.arabjc.2015.08.029
ER  - 

@article{
author = "Ajaj, Ismail and Assaleh, Fathi H. and Markovski, Jasmina and Rančić, Milica and Brković, Danijela V and Milčić, Miloš and Marinković, Aleksandar",
year = "2019",
abstract = "The state of the tautomeric equilibria of eleven arylazo pyridone dyes was evaluated from UV-Vis absorption spectra with the aid of the quantum mechanical modeling. NMR analysis and theoretical calculations, by using PCM/omega B97X-D/6-311G(d,p) method, confirmed that prepared compounds exist mainly in Hydrazo form. Internal hydrogen bonding in Hydrazo tautomer, analyzed by AIM topological analysis and total electron density at the bond critical point (BCP), confirmed a presence of strong hydrogen bond which contributes to higher stability of Hydrazo form. Linear solvation energy relationships (LSERs) rationalized solvent influence on solvatochromism of all compounds in Hydrazo form and K-T by using Kamlet-Taft model. Linear free energy relationships (LFERs) were applied to the substituent-inducedNMR chemical shifts (SCS) using SSP (single substituent parameter) and DSP (dual substituent parameter) model. Density plots over the highest occupied (HOMO) and lowest unoccupied molecular orbitals (LUMO) energy surface provide information on the charge transfer during excitation. The molecular electrostatic potential (MEP) surface map was plotted over the optimized geometry of the molecules in order to visualize electron density distribution and explain origin of solvent/solute interactions.",
publisher = "Elsevier, Amsterdam",
journal = "Arabian Journal of Chemistry",
title = "Solvatochromism and azo-hydrazo tautomerism of novel arylazo pyridone dyes: Experimental and quantum chemical study",
pages = "3478-3463",
number = "8",
volume = "12",
doi = "10.1016/j.arabjc.2015.08.029"
}

Ajaj, I., Assaleh, F. H., Markovski, J., Rančić, M., Brković, D. V., Milčić, M.,& Marinković, A.. (2019). Solvatochromism and azo-hydrazo tautomerism of novel arylazo pyridone dyes: Experimental and quantum chemical study. in Arabian Journal of Chemistry
Elsevier, Amsterdam., 12(8), 3463-3478.
https://doi.org/10.1016/j.arabjc.2015.08.029

Ajaj I, Assaleh FH, Markovski J, Rančić M, Brković DV, Milčić M, Marinković A. Solvatochromism and azo-hydrazo tautomerism of novel arylazo pyridone dyes: Experimental and quantum chemical study. in Arabian Journal of Chemistry. 2019;12(8):3463-3478.
doi:10.1016/j.arabjc.2015.08.029 .

Ajaj, Ismail, Assaleh, Fathi H., Markovski, Jasmina, Rančić, Milica, Brković, Danijela V, Milčić, Miloš, Marinković, Aleksandar, "Solvatochromism and azo-hydrazo tautomerism of novel arylazo pyridone dyes: Experimental and quantum chemical study" in Arabian Journal of Chemistry, 12, no. 8 (2019):3463-3478,
https://doi.org/10.1016/j.arabjc.2015.08.029 . .

TY  - JOUR
AU  - Brković, Danijela V.
AU  - Pavlović, Vladimir B.
AU  - Pavlović, Vera P.
AU  - Obradović, Nina
AU  - Mitrić, Miodrag
AU  - Stevanović, Sanja
AU  - Vlahović, Branislav
AU  - Uskoković, Petar
AU  - Marinković, Aleksandar
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3550
AB  - The structural characteristics of polymer nanocomposites with functionalized multiwall carbon nanotubes (MWCNTs) in poly(methyl methacrylate) matrix have been studied in relation to nanofiller loading and surface functionality. Different functional groups have been covalently attached on the MWCNTs sidewalls in order to induce interfacial interactions at nanofiller/polymer interface, which resulted in an improved nanomechanical features. Structural properties of nanocomposites, studied with XRD and Raman analysis, indicated the most pronounced decrease in a degree of amorphousness for samples containing 0.5 and 1 wt% of MWCNTs functionalized with dapsone (dapson-MWCNT) and diethyl malonate (dem-MWCNT). SEM and TEM micrographs confirmed improved dispersibility of the MWCNTs modified with aromatic structure of dapsone inside PMMA matrix. A significant increase in a glass transition temperature of over 60 degrees C has been found for the 1 wt% dapson-MWCNT nanocomposite. Additional modification of dapson-MWCNT by further increasing aromaticity and voluminosity of attached moiety (fid-MWCNT), showed 30 degrees C increases in a glass transition temperature at 4 wt% of nanofiller loading, which is similar to shift of 37 degrees C with loading of MWCNTs modified with ester terminal group. A maximum increase of 56% of reduced modulus and 86% of hardness was obtained for 1 wt% loading of dapson-MWCNT nanofiller.
PB  - Wiley, Hoboken
T2  - Polymer Composites
T1  - Structural Properties of the Multiwall Carbon Nanotubes/Poly(Methyl Methacrylate) Nanocomposites: Effect of the Multiwall Carbon Nanotubes Covalent Functionalization
EP  - E489
SP  - E472
VL  - 38
DO  - 10.1002/pc.23996
ER  - 

@article{
author = "Brković, Danijela V. and Pavlović, Vladimir B. and Pavlović, Vera P. and Obradović, Nina and Mitrić, Miodrag and Stevanović, Sanja and Vlahović, Branislav and Uskoković, Petar and Marinković, Aleksandar",
year = "2017",
abstract = "The structural characteristics of polymer nanocomposites with functionalized multiwall carbon nanotubes (MWCNTs) in poly(methyl methacrylate) matrix have been studied in relation to nanofiller loading and surface functionality. Different functional groups have been covalently attached on the MWCNTs sidewalls in order to induce interfacial interactions at nanofiller/polymer interface, which resulted in an improved nanomechanical features. Structural properties of nanocomposites, studied with XRD and Raman analysis, indicated the most pronounced decrease in a degree of amorphousness for samples containing 0.5 and 1 wt% of MWCNTs functionalized with dapsone (dapson-MWCNT) and diethyl malonate (dem-MWCNT). SEM and TEM micrographs confirmed improved dispersibility of the MWCNTs modified with aromatic structure of dapsone inside PMMA matrix. A significant increase in a glass transition temperature of over 60 degrees C has been found for the 1 wt% dapson-MWCNT nanocomposite. Additional modification of dapson-MWCNT by further increasing aromaticity and voluminosity of attached moiety (fid-MWCNT), showed 30 degrees C increases in a glass transition temperature at 4 wt% of nanofiller loading, which is similar to shift of 37 degrees C with loading of MWCNTs modified with ester terminal group. A maximum increase of 56% of reduced modulus and 86% of hardness was obtained for 1 wt% loading of dapson-MWCNT nanofiller.",
publisher = "Wiley, Hoboken",
journal = "Polymer Composites",
title = "Structural Properties of the Multiwall Carbon Nanotubes/Poly(Methyl Methacrylate) Nanocomposites: Effect of the Multiwall Carbon Nanotubes Covalent Functionalization",
pages = "E489-E472",
volume = "38",
doi = "10.1002/pc.23996"
}

Brković, D. V., Pavlović, V. B., Pavlović, V. P., Obradović, N., Mitrić, M., Stevanović, S., Vlahović, B., Uskoković, P.,& Marinković, A.. (2017). Structural Properties of the Multiwall Carbon Nanotubes/Poly(Methyl Methacrylate) Nanocomposites: Effect of the Multiwall Carbon Nanotubes Covalent Functionalization. in Polymer Composites
Wiley, Hoboken., 38, E472-E489.
https://doi.org/10.1002/pc.23996

Brković DV, Pavlović VB, Pavlović VP, Obradović N, Mitrić M, Stevanović S, Vlahović B, Uskoković P, Marinković A. Structural Properties of the Multiwall Carbon Nanotubes/Poly(Methyl Methacrylate) Nanocomposites: Effect of the Multiwall Carbon Nanotubes Covalent Functionalization. in Polymer Composites. 2017;38:E472-E489.
doi:10.1002/pc.23996 .

Brković, Danijela V., Pavlović, Vladimir B., Pavlović, Vera P., Obradović, Nina, Mitrić, Miodrag, Stevanović, Sanja, Vlahović, Branislav, Uskoković, Petar, Marinković, Aleksandar, "Structural Properties of the Multiwall Carbon Nanotubes/Poly(Methyl Methacrylate) Nanocomposites: Effect of the Multiwall Carbon Nanotubes Covalent Functionalization" in Polymer Composites, 38 (2017):E472-E489,
https://doi.org/10.1002/pc.23996 . .

TY  - JOUR
AU  - Assaleh, Fathi H.
AU  - Marinković, Aleksandar
AU  - Nikolić, Jasmina
AU  - Drmanić, Saša
AU  - Brković, Danijela V
AU  - Prlainović, Nevena
AU  - Jovanović, Bratislav Ž.
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3265
AB  - Linear free energy relationships (LFER) were applied to the kinetic data for the reaction of 5-substituted orotic acids, series 1, with diazodiphenylmethane (DDM) in N,N-dimethylformamide and compared with results obtained for 2-substituted benzoic acids, series 2. The correlation analysis of the kinetic data with sigma substituent parameters was carried out using SSP (single substituent parameter) methods. From the sign and value of proportinality constant rho, lower sensitivity to the substituent effect was obtained in series 1, 0.876, than in the series 2, 1.877. Evaluation of substituent "ortho-effect" was performed using the Charton model, which includes the steric substituent parameter, and Fujita and Nishioka's model, which describes the total ortho-effect as contribution of ordinary polar effect, the ortho-steric and ortho-polar effects. Results of correlations, obtained by using the Charton model, showed highest contribution of the polar effect, 0.861 vs. 2.101, whereas the steric effect is of lowest significance, 0.117 vs. 0.055, for series 1 and 2, respectively. Also, a low negative value of coefficient with the steric effect, -0.08, obtained from the Fujita-Nishioka model indicated low steric effect, influencing a decrease of the reaction rate in series 1. The structural and substituent effects were also studied by using the density functional theory method, and together with kinetic data, it gave a better insight into the influence of the effect of both geometry and substituent on the pi-electron density shift induced reactivity of investigated acids. geometry and substituent on the pi-electron density shift induced reactivity of investigated acids.
PB  - Wiley, Hoboken
T2  - International Journal of Chemical Kinetics
T1  - A LFER Kinetic Study of The Reaction of 5-Substituted Orotic Acids with Diazodiphenylmethane
EP  - 378
IS  - 7
SP  - 367
VL  - 48
DO  - 10.1002/kin.20997
ER  - 

@article{
author = "Assaleh, Fathi H. and Marinković, Aleksandar and Nikolić, Jasmina and Drmanić, Saša and Brković, Danijela V and Prlainović, Nevena and Jovanović, Bratislav Ž.",
year = "2016",
abstract = "Linear free energy relationships (LFER) were applied to the kinetic data for the reaction of 5-substituted orotic acids, series 1, with diazodiphenylmethane (DDM) in N,N-dimethylformamide and compared with results obtained for 2-substituted benzoic acids, series 2. The correlation analysis of the kinetic data with sigma substituent parameters was carried out using SSP (single substituent parameter) methods. From the sign and value of proportinality constant rho, lower sensitivity to the substituent effect was obtained in series 1, 0.876, than in the series 2, 1.877. Evaluation of substituent "ortho-effect" was performed using the Charton model, which includes the steric substituent parameter, and Fujita and Nishioka's model, which describes the total ortho-effect as contribution of ordinary polar effect, the ortho-steric and ortho-polar effects. Results of correlations, obtained by using the Charton model, showed highest contribution of the polar effect, 0.861 vs. 2.101, whereas the steric effect is of lowest significance, 0.117 vs. 0.055, for series 1 and 2, respectively. Also, a low negative value of coefficient with the steric effect, -0.08, obtained from the Fujita-Nishioka model indicated low steric effect, influencing a decrease of the reaction rate in series 1. The structural and substituent effects were also studied by using the density functional theory method, and together with kinetic data, it gave a better insight into the influence of the effect of both geometry and substituent on the pi-electron density shift induced reactivity of investigated acids. geometry and substituent on the pi-electron density shift induced reactivity of investigated acids.",
publisher = "Wiley, Hoboken",
journal = "International Journal of Chemical Kinetics",
title = "A LFER Kinetic Study of The Reaction of 5-Substituted Orotic Acids with Diazodiphenylmethane",
pages = "378-367",
number = "7",
volume = "48",
doi = "10.1002/kin.20997"
}

Assaleh, F. H., Marinković, A., Nikolić, J., Drmanić, S., Brković, D. V., Prlainović, N.,& Jovanović, B. Ž.. (2016). A LFER Kinetic Study of The Reaction of 5-Substituted Orotic Acids with Diazodiphenylmethane. in International Journal of Chemical Kinetics
Wiley, Hoboken., 48(7), 367-378.
https://doi.org/10.1002/kin.20997

Assaleh FH, Marinković A, Nikolić J, Drmanić S, Brković DV, Prlainović N, Jovanović BŽ. A LFER Kinetic Study of The Reaction of 5-Substituted Orotic Acids with Diazodiphenylmethane. in International Journal of Chemical Kinetics. 2016;48(7):367-378.
doi:10.1002/kin.20997 .

Assaleh, Fathi H., Marinković, Aleksandar, Nikolić, Jasmina, Drmanić, Saša, Brković, Danijela V, Prlainović, Nevena, Jovanović, Bratislav Ž., "A LFER Kinetic Study of The Reaction of 5-Substituted Orotic Acids with Diazodiphenylmethane" in International Journal of Chemical Kinetics, 48, no. 7 (2016):367-378,
https://doi.org/10.1002/kin.20997 . .

TY  - JOUR
AU  - Đorđević, Nenad
AU  - Marinković, Aleksandar
AU  - Nikolić, Jasmina
AU  - Drmanić, Saša
AU  - Rančić, Milica
AU  - Brković, Danijela V.
AU  - Uskoković, Petar
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3275
AB  - The morphological, thermal and barrier properties of low-density polyethylene/polycaprolactone-modified nanocellulose hybrid materials were investigated in this study. Nanocellulose/magnetite (NC-Fe3O4) nanocomposite and maleic acid functionalized NC/magnetite (NCMA-Fe3O4) nanocomposite were prepared and used as fillers at various concentrations (5, 10 and 15 wt. %) in the polycaprolactone (PCL) layer. PE was coated with a PCL/NC//magnetite layer. The addition of the filler did not unfavorably affect the inherent properties of the polymer, especially its barrier properties. Oxygen permeation measurements showed that the oxygen barrier properties of magnetite enriched PCL film were improved due to the chemical activity of the added material. The highest level of the barrier capacity was observed for PE samples coated with a PCL-based composite with NCMA-Fe3O4 micro/nanofiller, which implies a significant contribution of the surface modification of the nanocellulose with maleic anhydride residue to the improved barrier properties.
PB  - Srpsko hemijsko društvo, Beograd
T2  - Journal of the Serbian Chemical Society
T1  - A study of the barrier properties of polyethylene coated with a nanocellulose/magnetite composite film
EP  - 605
IS  - 5
SP  - 589
VL  - 81
DO  - 10.2298/JSC151217019D
ER  - 

@article{
author = "Đorđević, Nenad and Marinković, Aleksandar and Nikolić, Jasmina and Drmanić, Saša and Rančić, Milica and Brković, Danijela V. and Uskoković, Petar",
year = "2016",
abstract = "The morphological, thermal and barrier properties of low-density polyethylene/polycaprolactone-modified nanocellulose hybrid materials were investigated in this study. Nanocellulose/magnetite (NC-Fe3O4) nanocomposite and maleic acid functionalized NC/magnetite (NCMA-Fe3O4) nanocomposite were prepared and used as fillers at various concentrations (5, 10 and 15 wt. %) in the polycaprolactone (PCL) layer. PE was coated with a PCL/NC//magnetite layer. The addition of the filler did not unfavorably affect the inherent properties of the polymer, especially its barrier properties. Oxygen permeation measurements showed that the oxygen barrier properties of magnetite enriched PCL film were improved due to the chemical activity of the added material. The highest level of the barrier capacity was observed for PE samples coated with a PCL-based composite with NCMA-Fe3O4 micro/nanofiller, which implies a significant contribution of the surface modification of the nanocellulose with maleic anhydride residue to the improved barrier properties.",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "Journal of the Serbian Chemical Society",
title = "A study of the barrier properties of polyethylene coated with a nanocellulose/magnetite composite film",
pages = "605-589",
number = "5",
volume = "81",
doi = "10.2298/JSC151217019D"
}

Đorđević, N., Marinković, A., Nikolić, J., Drmanić, S., Rančić, M., Brković, D. V.,& Uskoković, P.. (2016). A study of the barrier properties of polyethylene coated with a nanocellulose/magnetite composite film. in Journal of the Serbian Chemical Society
Srpsko hemijsko društvo, Beograd., 81(5), 589-605.
https://doi.org/10.2298/JSC151217019D

Đorđević N, Marinković A, Nikolić J, Drmanić S, Rančić M, Brković DV, Uskoković P. A study of the barrier properties of polyethylene coated with a nanocellulose/magnetite composite film. in Journal of the Serbian Chemical Society. 2016;81(5):589-605.
doi:10.2298/JSC151217019D .

Đorđević, Nenad, Marinković, Aleksandar, Nikolić, Jasmina, Drmanić, Saša, Rančić, Milica, Brković, Danijela V., Uskoković, Petar, "A study of the barrier properties of polyethylene coated with a nanocellulose/magnetite composite film" in Journal of the Serbian Chemical Society, 81, no. 5 (2016):589-605,
https://doi.org/10.2298/JSC151217019D . .

TY  - JOUR
AU  - Brković, Danijela V
AU  - Avramov-Ivić, Milka
AU  - Rakić, Vesna M.
AU  - Valentini, Luca
AU  - Uskoković, Petar
AU  - Marinković, Aleksandar
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2982
AB  - Covalent sidewall functionalization of multiwalled carbon nanotubes (MWCNTs) has been performed using two approaches, direct and indirect cycloaddition through diethyl malonate, based on the Bingel reaction. The results revealed that functionalized MWCNTs demonstrated enhanced electrical properties and significantly lower sheet resistance, especially after electric field thermal assisted annealing at 80 degrees C was performed. The presence of 1,3-dicarbonyl compounds caused the surface of MWCNTs to be more hydrophilic, approachable for the electrolyte and improved the capacitance performance of Au/MWCNTs electrodes. The modified MWCNTs have been incorporated into nanocomposites by using solution mixing method with polyaniline and drop-casting resulting mixture on the paper substrate. The reduction in the sheet resistance with increasing the content of MWCNTs in the prepared nanocomposite films has been achieved.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Journal of Physics and Chemistry of Solids
T1  - Electrical and morphological characterization of multiwalled carbon nanotubes functionalized via the Bingel reaction
EP  - 134
SP  - 121
VL  - 83
DO  - 10.1016/j.jpcs.2015.04.004
ER  - 

@article{
author = "Brković, Danijela V and Avramov-Ivić, Milka and Rakić, Vesna M. and Valentini, Luca and Uskoković, Petar and Marinković, Aleksandar",
year = "2015",
abstract = "Covalent sidewall functionalization of multiwalled carbon nanotubes (MWCNTs) has been performed using two approaches, direct and indirect cycloaddition through diethyl malonate, based on the Bingel reaction. The results revealed that functionalized MWCNTs demonstrated enhanced electrical properties and significantly lower sheet resistance, especially after electric field thermal assisted annealing at 80 degrees C was performed. The presence of 1,3-dicarbonyl compounds caused the surface of MWCNTs to be more hydrophilic, approachable for the electrolyte and improved the capacitance performance of Au/MWCNTs electrodes. The modified MWCNTs have been incorporated into nanocomposites by using solution mixing method with polyaniline and drop-casting resulting mixture on the paper substrate. The reduction in the sheet resistance with increasing the content of MWCNTs in the prepared nanocomposite films has been achieved.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Journal of Physics and Chemistry of Solids",
title = "Electrical and morphological characterization of multiwalled carbon nanotubes functionalized via the Bingel reaction",
pages = "134-121",
volume = "83",
doi = "10.1016/j.jpcs.2015.04.004"
}

Brković, D. V., Avramov-Ivić, M., Rakić, V. M., Valentini, L., Uskoković, P.,& Marinković, A.. (2015). Electrical and morphological characterization of multiwalled carbon nanotubes functionalized via the Bingel reaction. in Journal of Physics and Chemistry of Solids
Pergamon-Elsevier Science Ltd, Oxford., 83, 121-134.
https://doi.org/10.1016/j.jpcs.2015.04.004

Brković DV, Avramov-Ivić M, Rakić VM, Valentini L, Uskoković P, Marinković A. Electrical and morphological characterization of multiwalled carbon nanotubes functionalized via the Bingel reaction. in Journal of Physics and Chemistry of Solids. 2015;83:121-134.
doi:10.1016/j.jpcs.2015.04.004 .

Brković, Danijela V, Avramov-Ivić, Milka, Rakić, Vesna M., Valentini, Luca, Uskoković, Petar, Marinković, Aleksandar, "Electrical and morphological characterization of multiwalled carbon nanotubes functionalized via the Bingel reaction" in Journal of Physics and Chemistry of Solids, 83 (2015):121-134,
https://doi.org/10.1016/j.jpcs.2015.04.004 . .

TY  - JOUR
AU  - Brković, Danijela V.
AU  - Kovacević, Vesna V.
AU  - Sretenović, Goran B.
AU  - Kuraica, Milorad M.
AU  - Trišović, Nemanja
AU  - Valentini, Luca
AU  - Marinković, Aleksandar
AU  - Kenny, Jose M.
AU  - Uskoković, Petar
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2818
AB  - Multi-walled carbon nanotubes (MWCNTs) and graphene nanoplatelets (GNPs) have been functionalized by dielectric barrier discharge (DBD) in air. The extent of functionalization of MWCNTs and GNPs reaches a maximum at the delivered discharge energy of 720 and 240J mg(-1), respectively. Further exposure to plasma leads to reduction of functional groups from the surface of the treated nanomaterials. It has also been demonstrated that DBD plasma does not produce dramatic structural changes in MWCNTs, while flakes of the treated GNPs become thinner and smaller in the lateral size. Conductive thin films, obtained by drop casting a solution of the treated nanomaterials in N-methyl-1-pyrrolidone on poly(methyl methacrylate) substrate, show significantly lower sheet resistance.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Journal of Physics and Chemistry of Solids
T1  - Effects of dielectric barrier discharge in air on morphological and electrical properties of graphene nanoplatelets and multi-walled carbon nanotubes
EP  - 868
IS  - 7
SP  - 858
VL  - 75
DO  - 10.1016/j.jpcs.2014.03.009
ER  - 

@article{
author = "Brković, Danijela V. and Kovacević, Vesna V. and Sretenović, Goran B. and Kuraica, Milorad M. and Trišović, Nemanja and Valentini, Luca and Marinković, Aleksandar and Kenny, Jose M. and Uskoković, Petar",
year = "2014",
abstract = "Multi-walled carbon nanotubes (MWCNTs) and graphene nanoplatelets (GNPs) have been functionalized by dielectric barrier discharge (DBD) in air. The extent of functionalization of MWCNTs and GNPs reaches a maximum at the delivered discharge energy of 720 and 240J mg(-1), respectively. Further exposure to plasma leads to reduction of functional groups from the surface of the treated nanomaterials. It has also been demonstrated that DBD plasma does not produce dramatic structural changes in MWCNTs, while flakes of the treated GNPs become thinner and smaller in the lateral size. Conductive thin films, obtained by drop casting a solution of the treated nanomaterials in N-methyl-1-pyrrolidone on poly(methyl methacrylate) substrate, show significantly lower sheet resistance.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Journal of Physics and Chemistry of Solids",
title = "Effects of dielectric barrier discharge in air on morphological and electrical properties of graphene nanoplatelets and multi-walled carbon nanotubes",
pages = "868-858",
number = "7",
volume = "75",
doi = "10.1016/j.jpcs.2014.03.009"
}

Brković, D. V., Kovacević, V. V., Sretenović, G. B., Kuraica, M. M., Trišović, N., Valentini, L., Marinković, A., Kenny, J. M.,& Uskoković, P.. (2014). Effects of dielectric barrier discharge in air on morphological and electrical properties of graphene nanoplatelets and multi-walled carbon nanotubes. in Journal of Physics and Chemistry of Solids
Pergamon-Elsevier Science Ltd, Oxford., 75(7), 858-868.
https://doi.org/10.1016/j.jpcs.2014.03.009

Brković DV, Kovacević VV, Sretenović GB, Kuraica MM, Trišović N, Valentini L, Marinković A, Kenny JM, Uskoković P. Effects of dielectric barrier discharge in air on morphological and electrical properties of graphene nanoplatelets and multi-walled carbon nanotubes. in Journal of Physics and Chemistry of Solids. 2014;75(7):858-868.
doi:10.1016/j.jpcs.2014.03.009 .

Brković, Danijela V., Kovacević, Vesna V., Sretenović, Goran B., Kuraica, Milorad M., Trišović, Nemanja, Valentini, Luca, Marinković, Aleksandar, Kenny, Jose M., Uskoković, Petar, "Effects of dielectric barrier discharge in air on morphological and electrical properties of graphene nanoplatelets and multi-walled carbon nanotubes" in Journal of Physics and Chemistry of Solids, 75, no. 7 (2014):858-868,
https://doi.org/10.1016/j.jpcs.2014.03.009 . .

TY  - JOUR
AU  - Mijin, Dušan
AU  - Marković, Jelena M.
AU  - Brković, Danijela V.
AU  - Marinković, Aleksandar
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2623
AB  - 2-Pyridones are important heterocyclic compounds that are widely used in medical chemistry, and their various derivatives have significant biological and medical applications. In this paper, the synthesis of 2-pyridones as well as 2-pyridone-based compounds, such as 2-quinolones, using microwave assisted organic chemistry is reviewed. The review is divided in three parts. In the first part, microwave synthesis of 2-pyridones according to the type of condensation is discussed. In the second part, microwave assisted synthesis of 2-quionolones is listed. At the end of the review several examples of microwave synthesis of other 2-pyridone based compounds (ring fused W-substituted 2-pyridones) are given.
AB  - Aromatična heterociklična jedinjenja predstavljaju veoma značajnu grupu jedinjenja zbog svoje biološke i medicinske primene. Šestočlana heterociklična jedinjenja koja sadrže azot (npr. piridini, piridoni, pirimidini, piperidini, piperazini) se puno koriste u medicini jer poseduju određena farmakološka svojstva, a poseban značaj imaju 2-piridoni i 4-piridoni. Derivati 2-piridona su posebno interesantni jer je 2-piridonska struktura prisutna u mnogim jedinjenjima prirodnog porekla od ko j i h mnoga poseduju biološku aktivnost. Zbog široke primene jedinjenja koja u sebi sadrže piridonsku strukturu razvijen je veliki broj postupaka za njihovu sintezu. Konvencionalni način izvođenja organskih sinteza podrazumeva zagrevanje spoljašnjim izvorima toplote pri čemu se toplota prenosi kondukcijom, što predstavlja spor i neefikasan metod prenosa energije, jer zavisi od toplotne provodljivosti materijala, pa je temperatura reaktora veća od temperature reakcione smeše. Nasuprot tome, mikrotalasno zračenje je efikasan izvor zagrevanja koji direktno prenosi energiju kroz interakciju sa polarnim molekulima prisutnim u reakcionoj smeši. Mikrotalasne sinteze se ubrajaju među metode koje poštuju principe takozvane 'zelene hemije' što predstavlja razlog više za ovakvo izvodjenje sinteza. U okviru rada dat je pregled sinteza 2-piridona i jedinjenja koja sadrže 2-piridonsko jezgro primenom mikrotalasne tehnike. Pregled obuhvata sinteze koje su izvršene kako u savremenim laboratorijskim mikrotalasnim reaktorima tako i one koje su izvršene u komercijalnim mikrotalasnim pećnicama za domaćinstvo. Takođe je ukazano na prednosti mikrotalasne sinteze u odnosu na konvencionalni način zagrevanja.
PB  - Association of Chemical Engineers of Serbia
T2  - Hemijska industrija
T1  - Microwave-assisted synthesis of 2-pyridone and 2-pyridone-based compounds
T1  - Mikrotalasna tehnika u sintezi 2-piridona i jedinjenja na bazi 2-piridona
EP  - 14
IS  - 1
SP  - 1
VL  - 68
DO  - 10.2298/HEMIND121204021M
ER  - 

@article{
author = "Mijin, Dušan and Marković, Jelena M. and Brković, Danijela V. and Marinković, Aleksandar",
year = "2014",
abstract = "2-Pyridones are important heterocyclic compounds that are widely used in medical chemistry, and their various derivatives have significant biological and medical applications. In this paper, the synthesis of 2-pyridones as well as 2-pyridone-based compounds, such as 2-quinolones, using microwave assisted organic chemistry is reviewed. The review is divided in three parts. In the first part, microwave synthesis of 2-pyridones according to the type of condensation is discussed. In the second part, microwave assisted synthesis of 2-quionolones is listed. At the end of the review several examples of microwave synthesis of other 2-pyridone based compounds (ring fused W-substituted 2-pyridones) are given., Aromatična heterociklična jedinjenja predstavljaju veoma značajnu grupu jedinjenja zbog svoje biološke i medicinske primene. Šestočlana heterociklična jedinjenja koja sadrže azot (npr. piridini, piridoni, pirimidini, piperidini, piperazini) se puno koriste u medicini jer poseduju određena farmakološka svojstva, a poseban značaj imaju 2-piridoni i 4-piridoni. Derivati 2-piridona su posebno interesantni jer je 2-piridonska struktura prisutna u mnogim jedinjenjima prirodnog porekla od ko j i h mnoga poseduju biološku aktivnost. Zbog široke primene jedinjenja koja u sebi sadrže piridonsku strukturu razvijen je veliki broj postupaka za njihovu sintezu. Konvencionalni način izvođenja organskih sinteza podrazumeva zagrevanje spoljašnjim izvorima toplote pri čemu se toplota prenosi kondukcijom, što predstavlja spor i neefikasan metod prenosa energije, jer zavisi od toplotne provodljivosti materijala, pa je temperatura reaktora veća od temperature reakcione smeše. Nasuprot tome, mikrotalasno zračenje je efikasan izvor zagrevanja koji direktno prenosi energiju kroz interakciju sa polarnim molekulima prisutnim u reakcionoj smeši. Mikrotalasne sinteze se ubrajaju među metode koje poštuju principe takozvane 'zelene hemije' što predstavlja razlog više za ovakvo izvodjenje sinteza. U okviru rada dat je pregled sinteza 2-piridona i jedinjenja koja sadrže 2-piridonsko jezgro primenom mikrotalasne tehnike. Pregled obuhvata sinteze koje su izvršene kako u savremenim laboratorijskim mikrotalasnim reaktorima tako i one koje su izvršene u komercijalnim mikrotalasnim pećnicama za domaćinstvo. Takođe je ukazano na prednosti mikrotalasne sinteze u odnosu na konvencionalni način zagrevanja.",
publisher = "Association of Chemical Engineers of Serbia",
journal = "Hemijska industrija",
title = "Microwave-assisted synthesis of 2-pyridone and 2-pyridone-based compounds, Mikrotalasna tehnika u sintezi 2-piridona i jedinjenja na bazi 2-piridona",
pages = "14-1",
number = "1",
volume = "68",
doi = "10.2298/HEMIND121204021M"
}

Mijin, D., Marković, J. M., Brković, D. V.,& Marinković, A.. (2014). Microwave-assisted synthesis of 2-pyridone and 2-pyridone-based compounds. in Hemijska industrija
Association of Chemical Engineers of Serbia., 68(1), 1-14.
https://doi.org/10.2298/HEMIND121204021M

Mijin D, Marković JM, Brković DV, Marinković A. Microwave-assisted synthesis of 2-pyridone and 2-pyridone-based compounds. in Hemijska industrija. 2014;68(1):1-14.
doi:10.2298/HEMIND121204021M .

Mijin, Dušan, Marković, Jelena M., Brković, Danijela V., Marinković, Aleksandar, "Microwave-assisted synthesis of 2-pyridone and 2-pyridone-based compounds" in Hemijska industrija, 68, no. 1 (2014):1-14,
https://doi.org/10.2298/HEMIND121204021M . .

TY  - CONF
AU  - Brković, Danijela V.
AU  - Pavlović, Vladimir B.
AU  - Pavlović, Vera P.
AU  - Obradović, Nina
AU  - Uskoković, Petar S.
AU  - Marinković, Aleksandar
PY  - 2013
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5207
AB  - In this study, we have performed functionalization of graphene nanoplatelets (GNPs) via Bingel reaction and investigated influence on the addition of covalently functionalized GPNs on the structural changes of the poly(methyl methacrylate). Preparation of poly(methyl methacrylate) nanocomposites with functionalized GNPs has been accomplished by drop casting method of dissolved PMMA mixed with modified graphene nanoplatelets dispersed in a N-methyl-1-pyrrolidone. Functionalizaton of graphene has been achieved under the conditions of Bingel reaction, which implies introduction of diethyl malonate on the graphene surfaces through the cyclopropane ring formation. Introduction of the cyclopropane ring on to the surface of graphene does not significantly affect the initial structural properties of graphene nanoplatelets, allowing better dispersible properties due to interaction of covalently attached diethyl malonate groups with the polymer chains. Fourier transform infrared spectroscopy (FTIR) and elemental analysis confirmed the effectiveness of the addition of diethyl malonate via Bingel reaction on the surface of GNPs. Scanning electron microscopy (SEM) has been used to provide information on the morphology of functionalized GNPs. Prepared nanocomposites have been characterized by Raman and FTIR spectroscopy. The changes regarding glass transition temperature have been monitored with differential scanning calorimetry (DSC).
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : II Serbian Ceramic Society Conference, Sep 30th-Oct 1st, 2013, Belgrade
T1  - Functionalization of graphene nanoplatelets via Bingel reaction for polymer nanocomposites
SP  - 49
UR  - https://hdl.handle.net/21.15107/rcub_dais_427
ER  - 

@conference{
author = "Brković, Danijela V. and Pavlović, Vladimir B. and Pavlović, Vera P. and Obradović, Nina and Uskoković, Petar S. and Marinković, Aleksandar",
year = "2013",
abstract = "In this study, we have performed functionalization of graphene nanoplatelets (GNPs) via Bingel reaction and investigated influence on the addition of covalently functionalized GPNs on the structural changes of the poly(methyl methacrylate). Preparation of poly(methyl methacrylate) nanocomposites with functionalized GNPs has been accomplished by drop casting method of dissolved PMMA mixed with modified graphene nanoplatelets dispersed in a N-methyl-1-pyrrolidone. Functionalizaton of graphene has been achieved under the conditions of Bingel reaction, which implies introduction of diethyl malonate on the graphene surfaces through the cyclopropane ring formation. Introduction of the cyclopropane ring on to the surface of graphene does not significantly affect the initial structural properties of graphene nanoplatelets, allowing better dispersible properties due to interaction of covalently attached diethyl malonate groups with the polymer chains. Fourier transform infrared spectroscopy (FTIR) and elemental analysis confirmed the effectiveness of the addition of diethyl malonate via Bingel reaction on the surface of GNPs. Scanning electron microscopy (SEM) has been used to provide information on the morphology of functionalized GNPs. Prepared nanocomposites have been characterized by Raman and FTIR spectroscopy. The changes regarding glass transition temperature have been monitored with differential scanning calorimetry (DSC).",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : II Serbian Ceramic Society Conference, Sep 30th-Oct 1st, 2013, Belgrade",
title = "Functionalization of graphene nanoplatelets via Bingel reaction for polymer nanocomposites",
pages = "49",
url = "https://hdl.handle.net/21.15107/rcub_dais_427"
}

Brković, D. V., Pavlović, V. B., Pavlović, V. P., Obradović, N., Uskoković, P. S.,& Marinković, A.. (2013). Functionalization of graphene nanoplatelets via Bingel reaction for polymer nanocomposites. in Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : II Serbian Ceramic Society Conference, Sep 30th-Oct 1st, 2013, Belgrade
Belgrade : Serbian Ceramic Society., 49.
https://hdl.handle.net/21.15107/rcub_dais_427

Brković DV, Pavlović VB, Pavlović VP, Obradović N, Uskoković PS, Marinković A. Functionalization of graphene nanoplatelets via Bingel reaction for polymer nanocomposites. in Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : II Serbian Ceramic Society Conference, Sep 30th-Oct 1st, 2013, Belgrade. 2013;:49.
https://hdl.handle.net/21.15107/rcub_dais_427 .

Brković, Danijela V., Pavlović, Vladimir B., Pavlović, Vera P., Obradović, Nina, Uskoković, Petar S., Marinković, Aleksandar, "Functionalization of graphene nanoplatelets via Bingel reaction for polymer nanocomposites" in Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : II Serbian Ceramic Society Conference, Sep 30th-Oct 1st, 2013, Belgrade (2013):49,
https://hdl.handle.net/21.15107/rcub_dais_427 .

TY  - JOUR
AU  - Ajaj, Ismail
AU  - Mijin, Dušan
AU  - Maslak, Veselin
AU  - Brković, Danijela V
AU  - Milčić, Miloš
AU  - Todorović, Nina
AU  - Marinković, Aleksandar
PY  - 2013
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2524
AB  - A simple and convenient synthesis of tautomeric (6 or 2)-hydroxy-4-methyl-(2 or 6)-oxo-1-(substituted phenyl)-(1,2 or 1,6)-dihydropyridine-3-carbonitriles from ethyl acetoacetate and 2-cyano-N-(substituted phenyl)ethanamides using microwave-assisted chemistry is presented. The structure of the obtained product was confirmed by the use of FT-IR, NMR, UV, and MS techniques. The presence of tautomeric forms (6-hydroxy-4-methyl-2-oxo-1-(substituted phenyl)-1,2-dihydropyridine-3-carbonitrile and 2-hydroxy-4-methyl-6-oxo-1-(substituted phenyl)-1,6-dihydropyridine-3-carbonitrile) and the state of equilibrium of the obtained product in DMSO-d (6) was studied by H-1 and C-13 NMR spectroscopy, as well as B3LYP/6-311++G(d,p) and GIAO/WP04/aug-cc-pVDZ theoretical calculations.
PB  - Springer Wien, Wien
T2  - Monatshefte Fur Chemie
T1  - A simple and convenient synthesis of tautomeric (6 or 2)-hydroxy-4-methyl-(2 or 6)-oxo-1-(substituted phenyl)-(1,2 or 1,6)-dihydropyridine-3-carbonitriles
EP  - 675
IS  - 5
SP  - 665
VL  - 144
DO  - 10.1007/s00706-012-0911-5
ER  - 

@article{
author = "Ajaj, Ismail and Mijin, Dušan and Maslak, Veselin and Brković, Danijela V and Milčić, Miloš and Todorović, Nina and Marinković, Aleksandar",
year = "2013",
abstract = "A simple and convenient synthesis of tautomeric (6 or 2)-hydroxy-4-methyl-(2 or 6)-oxo-1-(substituted phenyl)-(1,2 or 1,6)-dihydropyridine-3-carbonitriles from ethyl acetoacetate and 2-cyano-N-(substituted phenyl)ethanamides using microwave-assisted chemistry is presented. The structure of the obtained product was confirmed by the use of FT-IR, NMR, UV, and MS techniques. The presence of tautomeric forms (6-hydroxy-4-methyl-2-oxo-1-(substituted phenyl)-1,2-dihydropyridine-3-carbonitrile and 2-hydroxy-4-methyl-6-oxo-1-(substituted phenyl)-1,6-dihydropyridine-3-carbonitrile) and the state of equilibrium of the obtained product in DMSO-d (6) was studied by H-1 and C-13 NMR spectroscopy, as well as B3LYP/6-311++G(d,p) and GIAO/WP04/aug-cc-pVDZ theoretical calculations.",
publisher = "Springer Wien, Wien",
journal = "Monatshefte Fur Chemie",
title = "A simple and convenient synthesis of tautomeric (6 or 2)-hydroxy-4-methyl-(2 or 6)-oxo-1-(substituted phenyl)-(1,2 or 1,6)-dihydropyridine-3-carbonitriles",
pages = "675-665",
number = "5",
volume = "144",
doi = "10.1007/s00706-012-0911-5"
}

Ajaj, I., Mijin, D., Maslak, V., Brković, D. V., Milčić, M., Todorović, N.,& Marinković, A.. (2013). A simple and convenient synthesis of tautomeric (6 or 2)-hydroxy-4-methyl-(2 or 6)-oxo-1-(substituted phenyl)-(1,2 or 1,6)-dihydropyridine-3-carbonitriles. in Monatshefte Fur Chemie
Springer Wien, Wien., 144(5), 665-675.
https://doi.org/10.1007/s00706-012-0911-5

Ajaj I, Mijin D, Maslak V, Brković DV, Milčić M, Todorović N, Marinković A. A simple and convenient synthesis of tautomeric (6 or 2)-hydroxy-4-methyl-(2 or 6)-oxo-1-(substituted phenyl)-(1,2 or 1,6)-dihydropyridine-3-carbonitriles. in Monatshefte Fur Chemie. 2013;144(5):665-675.
doi:10.1007/s00706-012-0911-5 .

Ajaj, Ismail, Mijin, Dušan, Maslak, Veselin, Brković, Danijela V, Milčić, Miloš, Todorović, Nina, Marinković, Aleksandar, "A simple and convenient synthesis of tautomeric (6 or 2)-hydroxy-4-methyl-(2 or 6)-oxo-1-(substituted phenyl)-(1,2 or 1,6)-dihydropyridine-3-carbonitriles" in Monatshefte Fur Chemie, 144, no. 5 (2013):665-675,
https://doi.org/10.1007/s00706-012-0911-5 . .

TY  - JOUR
AU  - Milosavljević, Milutin M.
AU  - Marinković, Aleksandar
AU  - Marković, Jelena M.
AU  - Brković, Danijela V.
AU  - Milosavljević, Milan M.
PY  - 2012
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2070
AB  - A new optimized laboratory synthesis of tetraalkylthiuram disulfides, starting from dialkyl amines and carbon disulfide in presence of three oxidants (hydrogen peroxide, potassium peroxodisulfate and sodium hypochlorite) and appropriate reaction media (two mixtures of isopropyl alcohol-water used in two consecutive syntheses) was presented in this work. The first synthesis was performed in a recycled azeotropic mixture of isopropyl alcohol-water 87.7%-12.3%, and second in a filtrate obtained after first synthesis, which was a mixture of isopropyl alcohol-water 70.4%-29.6%. After the second synthesis and filtration, recycled azeotropic mixture isopropyl alcohol-water 87.7%-12.3% was regenerated from the filtrate by rectification. Considering this, the technology for beneficial use of recycling isopropyl alcohol-water mixture as a reaction medium for tetraalkylthiuram disulfides synthesis was developed. This concept could contribute to extraordinary economical benefit of implemented optimal laboratory synthesis at semi-industrial level. High yields of tetraalkylthiuram disulfides were obtained at both laboratory and semi-industrial level. Structure and purity of synthesized compounds were confirmed by elemental analysis, as well as FTIR, 1H- and 13C-NMR, and MS spectral data.
AB  - U ovom radu je prikazan nov optimizovani laboratorijski postupak sinteza tetraalkiltiuramdisulfida, polazeći od dialkilamina i ugljendisulfida u prisustvu oksidacionih sredstava (vodonik-peroksid, kalijum-peroksodisulfat i natrijum-hipohlorit), u odgovarajućem reakcionom medijumu: dve smeše izopropil alkohol-voda korišćene u dve uzastopne sinteze. Prva sinteza se izvodi u reciklovanoj azeotropskoj smeši izopropil-alkohola-voda sastava 87,7%-12,3%. Izvršena je optimizacija postupka u odnosu na molarni odnos reaktanata i koncetraciju proizvoda u suspenziji. Filtrat, dobijen nakon filtriranja suspenzije tetraalkiltiuram-disulfida iz prve sinteze, koji sadrži smešu izopropil alkohol-voda 70,4%-29,6%, uspešno je korišćen za naredne sinteze tetraalkiltiuram-disulfida. Nakon druge sinteze, filtracijom suspenzije, dobija se filtrat kao smeša izopropil-alkohol-voda 57,0%-43,0%, koji se regeneriše rektifikacijom pri čemu se dobija azeotropska smeša sastava izopropil alkohol-voda 87,7%-12,3%. Primenom navedenog postupka osvojena je tehnologija koja uključuje proces reciklovanja smeše reakcionog medijuma izopropil alkohol-voda za sintezu tetraalkiltiuram-disulfida. Takav koncept doprinosi izvanrednoj ekonomičnosti implementiranog optimalnog laboratorijkog postupka sinteze na poluindustrijski nivo. Visoki prinosi tetraalkiltiuram-disulfida su dobijeni sintezama na laboratorijskom nivou, kao i primenom na poluindustrijskom nivou proizvodnje. Struktura i čistoća sintetisanih jedinjenja: tetrametiltiuram-disulfid (TMTD), tetraetiltiuram-disulfid (TETD), tetrapropiltiuram-disulfid (TPTD), tetraizopropiltiuram-disulfid (TiPTD), tetrabutiltiuramdisulfid (TBTD), tetraizobutiltiuram-disulfid (TiBTD), su potvrđene FTIR, 1H- i 13C-NMR spektroskopijom, MS spektrometrijom i elementalnom analizom. PR Projekat Ministarstva nauke Republike Srbije, br. 172013.
PB  - Association of the Chemical Engineers of Serbia
T2  - Chemical Industry & Chemical Engineering Quarterly
T1  - Synthesis of tetraalkylthiuram disulfides using different oxidants in recycling solvent mixture
T1  - Sinteza tetraalkiltiuram-disulfida primenom različitih oksidacionih sredstava u reciklovanoj smeši rastvarača
EP  - 81
IS  - 1
SP  - 73
VL  - 18
DO  - 10.2298/CICEQ110726048M
ER  - 

@article{
author = "Milosavljević, Milutin M. and Marinković, Aleksandar and Marković, Jelena M. and Brković, Danijela V. and Milosavljević, Milan M.",
year = "2012",
abstract = "A new optimized laboratory synthesis of tetraalkylthiuram disulfides, starting from dialkyl amines and carbon disulfide in presence of three oxidants (hydrogen peroxide, potassium peroxodisulfate and sodium hypochlorite) and appropriate reaction media (two mixtures of isopropyl alcohol-water used in two consecutive syntheses) was presented in this work. The first synthesis was performed in a recycled azeotropic mixture of isopropyl alcohol-water 87.7%-12.3%, and second in a filtrate obtained after first synthesis, which was a mixture of isopropyl alcohol-water 70.4%-29.6%. After the second synthesis and filtration, recycled azeotropic mixture isopropyl alcohol-water 87.7%-12.3% was regenerated from the filtrate by rectification. Considering this, the technology for beneficial use of recycling isopropyl alcohol-water mixture as a reaction medium for tetraalkylthiuram disulfides synthesis was developed. This concept could contribute to extraordinary economical benefit of implemented optimal laboratory synthesis at semi-industrial level. High yields of tetraalkylthiuram disulfides were obtained at both laboratory and semi-industrial level. Structure and purity of synthesized compounds were confirmed by elemental analysis, as well as FTIR, 1H- and 13C-NMR, and MS spectral data., U ovom radu je prikazan nov optimizovani laboratorijski postupak sinteza tetraalkiltiuramdisulfida, polazeći od dialkilamina i ugljendisulfida u prisustvu oksidacionih sredstava (vodonik-peroksid, kalijum-peroksodisulfat i natrijum-hipohlorit), u odgovarajućem reakcionom medijumu: dve smeše izopropil alkohol-voda korišćene u dve uzastopne sinteze. Prva sinteza se izvodi u reciklovanoj azeotropskoj smeši izopropil-alkohola-voda sastava 87,7%-12,3%. Izvršena je optimizacija postupka u odnosu na molarni odnos reaktanata i koncetraciju proizvoda u suspenziji. Filtrat, dobijen nakon filtriranja suspenzije tetraalkiltiuram-disulfida iz prve sinteze, koji sadrži smešu izopropil alkohol-voda 70,4%-29,6%, uspešno je korišćen za naredne sinteze tetraalkiltiuram-disulfida. Nakon druge sinteze, filtracijom suspenzije, dobija se filtrat kao smeša izopropil-alkohol-voda 57,0%-43,0%, koji se regeneriše rektifikacijom pri čemu se dobija azeotropska smeša sastava izopropil alkohol-voda 87,7%-12,3%. Primenom navedenog postupka osvojena je tehnologija koja uključuje proces reciklovanja smeše reakcionog medijuma izopropil alkohol-voda za sintezu tetraalkiltiuram-disulfida. Takav koncept doprinosi izvanrednoj ekonomičnosti implementiranog optimalnog laboratorijkog postupka sinteze na poluindustrijski nivo. Visoki prinosi tetraalkiltiuram-disulfida su dobijeni sintezama na laboratorijskom nivou, kao i primenom na poluindustrijskom nivou proizvodnje. Struktura i čistoća sintetisanih jedinjenja: tetrametiltiuram-disulfid (TMTD), tetraetiltiuram-disulfid (TETD), tetrapropiltiuram-disulfid (TPTD), tetraizopropiltiuram-disulfid (TiPTD), tetrabutiltiuramdisulfid (TBTD), tetraizobutiltiuram-disulfid (TiBTD), su potvrđene FTIR, 1H- i 13C-NMR spektroskopijom, MS spektrometrijom i elementalnom analizom. PR Projekat Ministarstva nauke Republike Srbije, br. 172013.",
publisher = "Association of the Chemical Engineers of Serbia",
journal = "Chemical Industry & Chemical Engineering Quarterly",
title = "Synthesis of tetraalkylthiuram disulfides using different oxidants in recycling solvent mixture, Sinteza tetraalkiltiuram-disulfida primenom različitih oksidacionih sredstava u reciklovanoj smeši rastvarača",
pages = "81-73",
number = "1",
volume = "18",
doi = "10.2298/CICEQ110726048M"
}

Milosavljević, M. M., Marinković, A., Marković, J. M., Brković, D. V.,& Milosavljević, M. M.. (2012). Synthesis of tetraalkylthiuram disulfides using different oxidants in recycling solvent mixture. in Chemical Industry & Chemical Engineering Quarterly
Association of the Chemical Engineers of Serbia., 18(1), 73-81.
https://doi.org/10.2298/CICEQ110726048M

Milosavljević MM, Marinković A, Marković JM, Brković DV, Milosavljević MM. Synthesis of tetraalkylthiuram disulfides using different oxidants in recycling solvent mixture. in Chemical Industry & Chemical Engineering Quarterly. 2012;18(1):73-81.
doi:10.2298/CICEQ110726048M .

Milosavljević, Milutin M., Marinković, Aleksandar, Marković, Jelena M., Brković, Danijela V., Milosavljević, Milan M., "Synthesis of tetraalkylthiuram disulfides using different oxidants in recycling solvent mixture" in Chemical Industry & Chemical Engineering Quarterly, 18, no. 1 (2012):73-81,
https://doi.org/10.2298/CICEQ110726048M . .

TY  - JOUR
AU  - Sovrlić, Milica
AU  - Milosavljević, Milutin M.
AU  - Marinković, Aleksandar
AU  - Đukanović, Jasmina S.
AU  - Brković, Danijela V.
AU  - Konstantinović, Sandra
PY  - 2011
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1795
AB  - An optimized synthesis of N-alkyl, N,N-dialkyl- and N-cycloalkyl-O-isobutyl thioncarbamates by aminolysis of sodium isobutylxanthogenic acid (NaiBXAc) and primary, secondary and cycloalkyl amines was developed at laboratory scale and applied at semi-industrial level. Studies on dependence of N-n-propyl-O-isopropylthiocarbamate yield and purity with respect to reaction parameters: reaction time and molar ratio of n-propylamine and NaiBXAc, were performed. In such way, optimal reaction conditions for synthesis of N-alkyl, N,N-dialkyl- and N-cycloalkyl- O-isobutyl thioncarbamates, by aminolysis of NaiBXAc, were established. Also, comparative results of thioncarbamates synthesis starting from potassium isobutyl xanthate (KiBX) and corresponding amines in presence of different oxidants (hydrogen peroxide, sodium hypochlorite and new oxidative agent potassium peroxodisulfate) were evaluated. The synthesized compounds have been fully characterized by FTIR, 1H- and 13C-NMR and MS data, elemental analysis and purity have been determined by gas chromatographic method (GC). To our knowledge, ten synthesized thioncarbamates are here characterized for the first time. The synthesized compounds could be used as selective reagents for flotation of copper and zinc ores. The presented methods offer several benefits, namely, high product yields and purity, simple operation, mild reaction conditions without use of hazardous organic solvents, while some of them could be implemented on industrial scale production.
AB  - U radu je prikazana optimizovana sinteza N-alkil-, N,N-dialkil- i N-cikloalkil-O-izobutiltionkarbamata reakcijom aminolize natrijum-izobutilksantogenacetata (NaiBXAc) i primarnih, sekundarnih i cikloalkilamina. Takođe, dat je pregled uporednih postupaka sinteze tionkarbamata polazeći od kalijum-izobutilksantata (KiBX) i odgovarajućih amina u prisustvu različitih oksidacionih sredstava: vodonik-peroksida, natrijum-hipohlorita i kalijum-peroksodisulfata kao novog oksidacionog sredstva. Struktura sintetisanih jedinjenja potvrđena je FTIR, 1H- i 13C-NMR i MS instrumentalnim metodama i elementarnom analizom, a čistoća je određena gasnom hromatografskom metodom. Deset sintetisanih tionkarbamata su prvi put okarakterisani i predstavljaju nova jedinjenja. Sintetisana jedinjenja mogu naći primenu kao selektivni reagensi za flotaciju rude bakra i cinka. Opisane postupke karakteriše visok stepen konverzije i čistoća proizvoda, blagi reakcioni uslovi bez upotrebe organskih rastvarača kao reakcionog medijuma, a neki su tehnološki primenljivi na industrijskom nivou proizvodnje.
PB  - Association of Chemical Engineers of Serbia
T2  - Hemijska industrija
T1  - Comparative analysis of oxidative synthesis of N-alkyl, N,N-dialkyl and N-cykloalkyl-O-isobutyl thioncarbamate
T1  - Uporedna analiza oksidativnih postupaka sinteze N-alkil, N,N-dialkil i N-cikloalkil-O-izobutil tionkarbamata
EP  - 549
IS  - 5
SP  - 541
VL  - 65
DO  - 10.2298/HEMIND110504038S
ER  - 

@article{
author = "Sovrlić, Milica and Milosavljević, Milutin M. and Marinković, Aleksandar and Đukanović, Jasmina S. and Brković, Danijela V. and Konstantinović, Sandra",
year = "2011",
abstract = "An optimized synthesis of N-alkyl, N,N-dialkyl- and N-cycloalkyl-O-isobutyl thioncarbamates by aminolysis of sodium isobutylxanthogenic acid (NaiBXAc) and primary, secondary and cycloalkyl amines was developed at laboratory scale and applied at semi-industrial level. Studies on dependence of N-n-propyl-O-isopropylthiocarbamate yield and purity with respect to reaction parameters: reaction time and molar ratio of n-propylamine and NaiBXAc, were performed. In such way, optimal reaction conditions for synthesis of N-alkyl, N,N-dialkyl- and N-cycloalkyl- O-isobutyl thioncarbamates, by aminolysis of NaiBXAc, were established. Also, comparative results of thioncarbamates synthesis starting from potassium isobutyl xanthate (KiBX) and corresponding amines in presence of different oxidants (hydrogen peroxide, sodium hypochlorite and new oxidative agent potassium peroxodisulfate) were evaluated. The synthesized compounds have been fully characterized by FTIR, 1H- and 13C-NMR and MS data, elemental analysis and purity have been determined by gas chromatographic method (GC). To our knowledge, ten synthesized thioncarbamates are here characterized for the first time. The synthesized compounds could be used as selective reagents for flotation of copper and zinc ores. The presented methods offer several benefits, namely, high product yields and purity, simple operation, mild reaction conditions without use of hazardous organic solvents, while some of them could be implemented on industrial scale production., U radu je prikazana optimizovana sinteza N-alkil-, N,N-dialkil- i N-cikloalkil-O-izobutiltionkarbamata reakcijom aminolize natrijum-izobutilksantogenacetata (NaiBXAc) i primarnih, sekundarnih i cikloalkilamina. Takođe, dat je pregled uporednih postupaka sinteze tionkarbamata polazeći od kalijum-izobutilksantata (KiBX) i odgovarajućih amina u prisustvu različitih oksidacionih sredstava: vodonik-peroksida, natrijum-hipohlorita i kalijum-peroksodisulfata kao novog oksidacionog sredstva. Struktura sintetisanih jedinjenja potvrđena je FTIR, 1H- i 13C-NMR i MS instrumentalnim metodama i elementarnom analizom, a čistoća je određena gasnom hromatografskom metodom. Deset sintetisanih tionkarbamata su prvi put okarakterisani i predstavljaju nova jedinjenja. Sintetisana jedinjenja mogu naći primenu kao selektivni reagensi za flotaciju rude bakra i cinka. Opisane postupke karakteriše visok stepen konverzije i čistoća proizvoda, blagi reakcioni uslovi bez upotrebe organskih rastvarača kao reakcionog medijuma, a neki su tehnološki primenljivi na industrijskom nivou proizvodnje.",
publisher = "Association of Chemical Engineers of Serbia",
journal = "Hemijska industrija",
title = "Comparative analysis of oxidative synthesis of N-alkyl, N,N-dialkyl and N-cykloalkyl-O-isobutyl thioncarbamate, Uporedna analiza oksidativnih postupaka sinteze N-alkil, N,N-dialkil i N-cikloalkil-O-izobutil tionkarbamata",
pages = "549-541",
number = "5",
volume = "65",
doi = "10.2298/HEMIND110504038S"
}

Sovrlić, M., Milosavljević, M. M., Marinković, A., Đukanović, J. S., Brković, D. V.,& Konstantinović, S.. (2011). Comparative analysis of oxidative synthesis of N-alkyl, N,N-dialkyl and N-cykloalkyl-O-isobutyl thioncarbamate. in Hemijska industrija
Association of Chemical Engineers of Serbia., 65(5), 541-549.
https://doi.org/10.2298/HEMIND110504038S

Sovrlić M, Milosavljević MM, Marinković A, Đukanović JS, Brković DV, Konstantinović S. Comparative analysis of oxidative synthesis of N-alkyl, N,N-dialkyl and N-cykloalkyl-O-isobutyl thioncarbamate. in Hemijska industrija. 2011;65(5):541-549.
doi:10.2298/HEMIND110504038S .

Sovrlić, Milica, Milosavljević, Milutin M., Marinković, Aleksandar, Đukanović, Jasmina S., Brković, Danijela V., Konstantinović, Sandra, "Comparative analysis of oxidative synthesis of N-alkyl, N,N-dialkyl and N-cykloalkyl-O-isobutyl thioncarbamate" in Hemijska industrija, 65, no. 5 (2011):541-549,
https://doi.org/10.2298/HEMIND110504038S . .

TY  - JOUR
AU  - Ilić, Nataša
AU  - Marinković, Aleksandar
AU  - Brković, Danijela V.
AU  - Petrović, Slobodan
PY  - 2010
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1659
AB  - Phencyclidine (PCP) or 1-phenyl-cyclohexylpiperidine is the best-known representative drug from the compound class of arylcyclohexylamines. On a pharmacological activities basis, it belongs to the family of drugs known as dissociative anesthetics. In recent years, great attention has been paid to the investigation of substances that have been abused, including PCP. PCP is a synthetic drug with stimulating and hallucinogenic effects (street name 'angel dust'), and it is included in the Schedule Substances List in Serbia and worldwide. In the beginning, PCP has been sold in pharmacies as a local anesthetic, but very quickly it was withdrawn from sale because of unwanted effects on consumer health causing psychoactive addiction. Taking into account that great attention is being given nowadays to substances that are subject of abuse, biological and pharmacological effects of PCP and its derivative, which depend on their structure and methods for synthesis, is described in this paper. It is shown that PCP is antagonist of N-methyl-D-aspartate (NMDA) and that it causes antiglutamatergic hallucinations, unlike BTCP whose agonist is an NMDA receptor and is obtained by modifying the structure of PCP. This paper presents a PCP metabolism and provides an overview of the methods for their identification and quantification in biological samples. Immunological tests of PCP in biological samples can provide a quick but wrong result because of the possible interference with the other substances of abuse as opposed to instrumental methods. Based on the presented method and the results it was concluded that the method of choice for the examinations of biological samples for the presence of PCP is gas chromatography in combination with mass spectroscopy.
AB  - Fenciklidin (PCP) ili 1-fenil-cikloheksilpiperidin spada u klasu arilcikloheksilaminskih derivata i po svojoj farmakološkoj aktivnosti pripada familiji disocijativnih anestetika. PCP je sintetička droga sa stimulativnim i halucinogenim dejstvom, koja se prvobitno pojavila u apotekama kao lokalni anestetik, ali je vrlo brzo povučena iz prodaje zbog neželjenih efekata po zdravlje njenih konzumenata i postala je predmet zloupotrebe. S obzirom da se danas velika pažnja poklanja supstancama koja su predmet zloupotrebe, u ovom radu je opisano biološko i farmakološko dejstvo PCP i njegovih derivata u zavisnosti od njihove strukture, kao i metode za dobijanje istog. Pokazano je da je PCP antagonist N-metil-D-aspartat (NMDA) receptora, koji blokira aktivnost NMDA receptora te dovodi do antiglutamatergičnih halucinacija. U radu je prikazan metabolizam PCP kao i pregled metoda za njegovo dokazivanje i kvantifikaciju u biološkim uzorcima jer se nalazi na tzv. Listi supstanci pod kontrolom. Na osnovu rezultata koja su dobijena kvalitativnim i kvantitativnim ispitivanjem PCP u biološkim uzorcima može se zaključiti da su hromatografske i spektrografske metoda najosetljivije za razdvajanje i detekciju PCP.
PB  - Association of Chemical Engineers of Serbia
T2  - Hemijska industrija
T1  - Synthesis and characterization of phencyclidine and its derivatives
T1  - Sinteza i karakterizacija fenciklidina i njegovih derivata
EP  - 400
IS  - 5
SP  - 389
VL  - 64
DO  - 10.2298/HEMIND100523050I
ER  - 

@article{
author = "Ilić, Nataša and Marinković, Aleksandar and Brković, Danijela V. and Petrović, Slobodan",
year = "2010",
abstract = "Phencyclidine (PCP) or 1-phenyl-cyclohexylpiperidine is the best-known representative drug from the compound class of arylcyclohexylamines. On a pharmacological activities basis, it belongs to the family of drugs known as dissociative anesthetics. In recent years, great attention has been paid to the investigation of substances that have been abused, including PCP. PCP is a synthetic drug with stimulating and hallucinogenic effects (street name 'angel dust'), and it is included in the Schedule Substances List in Serbia and worldwide. In the beginning, PCP has been sold in pharmacies as a local anesthetic, but very quickly it was withdrawn from sale because of unwanted effects on consumer health causing psychoactive addiction. Taking into account that great attention is being given nowadays to substances that are subject of abuse, biological and pharmacological effects of PCP and its derivative, which depend on their structure and methods for synthesis, is described in this paper. It is shown that PCP is antagonist of N-methyl-D-aspartate (NMDA) and that it causes antiglutamatergic hallucinations, unlike BTCP whose agonist is an NMDA receptor and is obtained by modifying the structure of PCP. This paper presents a PCP metabolism and provides an overview of the methods for their identification and quantification in biological samples. Immunological tests of PCP in biological samples can provide a quick but wrong result because of the possible interference with the other substances of abuse as opposed to instrumental methods. Based on the presented method and the results it was concluded that the method of choice for the examinations of biological samples for the presence of PCP is gas chromatography in combination with mass spectroscopy., Fenciklidin (PCP) ili 1-fenil-cikloheksilpiperidin spada u klasu arilcikloheksilaminskih derivata i po svojoj farmakološkoj aktivnosti pripada familiji disocijativnih anestetika. PCP je sintetička droga sa stimulativnim i halucinogenim dejstvom, koja se prvobitno pojavila u apotekama kao lokalni anestetik, ali je vrlo brzo povučena iz prodaje zbog neželjenih efekata po zdravlje njenih konzumenata i postala je predmet zloupotrebe. S obzirom da se danas velika pažnja poklanja supstancama koja su predmet zloupotrebe, u ovom radu je opisano biološko i farmakološko dejstvo PCP i njegovih derivata u zavisnosti od njihove strukture, kao i metode za dobijanje istog. Pokazano je da je PCP antagonist N-metil-D-aspartat (NMDA) receptora, koji blokira aktivnost NMDA receptora te dovodi do antiglutamatergičnih halucinacija. U radu je prikazan metabolizam PCP kao i pregled metoda za njegovo dokazivanje i kvantifikaciju u biološkim uzorcima jer se nalazi na tzv. Listi supstanci pod kontrolom. Na osnovu rezultata koja su dobijena kvalitativnim i kvantitativnim ispitivanjem PCP u biološkim uzorcima može se zaključiti da su hromatografske i spektrografske metoda najosetljivije za razdvajanje i detekciju PCP.",
publisher = "Association of Chemical Engineers of Serbia",
journal = "Hemijska industrija",
title = "Synthesis and characterization of phencyclidine and its derivatives, Sinteza i karakterizacija fenciklidina i njegovih derivata",
pages = "400-389",
number = "5",
volume = "64",
doi = "10.2298/HEMIND100523050I"
}

Ilić, N., Marinković, A., Brković, D. V.,& Petrović, S.. (2010). Synthesis and characterization of phencyclidine and its derivatives. in Hemijska industrija
Association of Chemical Engineers of Serbia., 64(5), 389-400.
https://doi.org/10.2298/HEMIND100523050I

Ilić N, Marinković A, Brković DV, Petrović S. Synthesis and characterization of phencyclidine and its derivatives. in Hemijska industrija. 2010;64(5):389-400.
doi:10.2298/HEMIND100523050I .

Ilić, Nataša, Marinković, Aleksandar, Brković, Danijela V., Petrović, Slobodan, "Synthesis and characterization of phencyclidine and its derivatives" in Hemijska industrija, 64, no. 5 (2010):389-400,
https://doi.org/10.2298/HEMIND100523050I . .