TY  - JOUR
AU  - Mališić, Vanja
AU  - Gajić, Vuk
AU  - Porobić, Slavica
AU  - Patarić, Aleksandra
AU  - Putić, Slaviša
AU  - Vujčić, Ivica
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10683
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7168
AB  - Polymethyl methacrylate (PMMA) is a polymer material widely used in dental applications due to its excellent biocompatibility, stable physicochemical properties, easy manipulation, and low cost. The combination of biocompatible polymers and ceramics has great potential for the development of materials in the dental industry with improved mechanical properties. The addition of Al2O3 nanoparticles to PMMA can significantly improve its compressive and flexural strengths and wear resistance. Since this material is used in dental applications, it requires a high degree of product sterility. This can easily be achieved with gamma radiation treatment. Gamma radiation not only ensures the sterility of the product but can also affects changes in numerous material properties. The aim of this paper is to determine the influence of different doses of gamma radiation on the microbiological purity and changes in the mechanical and thermal properties of the PMMA/Al2O3 composite as well as the microstructural and color changes. It was found that the dose of radiation of 25 kGy is sufficient for complete sterilization of the product. This radiation dose improves the mechanical properties of the material and thermal stability. On the other hand, the dose of 25 kGy does not affect the morphology of the exposed sample and has small effect on the color change.
T2  - Radiation Physics and Chemistry
T1  - The effect of gamma irradiation on the synthesis, microbiological sterility, and improvement of properties of PMMA-Al2O3 composite used in dental prosthesis manufacturing
VL  - 207
SP  - 110846
DO  - 10.1016/j.radphyschem.2023.110846
ER  - 

@article{
author = "Mališić, Vanja and Gajić, Vuk and Porobić, Slavica and Patarić, Aleksandra and Putić, Slaviša and Vujčić, Ivica",
year = "2023",
abstract = "Polymethyl methacrylate (PMMA) is a polymer material widely used in dental applications due to its excellent biocompatibility, stable physicochemical properties, easy manipulation, and low cost. The combination of biocompatible polymers and ceramics has great potential for the development of materials in the dental industry with improved mechanical properties. The addition of Al2O3 nanoparticles to PMMA can significantly improve its compressive and flexural strengths and wear resistance. Since this material is used in dental applications, it requires a high degree of product sterility. This can easily be achieved with gamma radiation treatment. Gamma radiation not only ensures the sterility of the product but can also affects changes in numerous material properties. The aim of this paper is to determine the influence of different doses of gamma radiation on the microbiological purity and changes in the mechanical and thermal properties of the PMMA/Al2O3 composite as well as the microstructural and color changes. It was found that the dose of radiation of 25 kGy is sufficient for complete sterilization of the product. This radiation dose improves the mechanical properties of the material and thermal stability. On the other hand, the dose of 25 kGy does not affect the morphology of the exposed sample and has small effect on the color change.",
journal = "Radiation Physics and Chemistry",
title = "The effect of gamma irradiation on the synthesis, microbiological sterility, and improvement of properties of PMMA-Al2O3 composite used in dental prosthesis manufacturing",
volume = "207",
pages = "110846",
doi = "10.1016/j.radphyschem.2023.110846"
}

Mališić, V., Gajić, V., Porobić, S., Patarić, A., Putić, S.,& Vujčić, I.. (2023). The effect of gamma irradiation on the synthesis, microbiological sterility, and improvement of properties of PMMA-Al2O3 composite used in dental prosthesis manufacturing. in Radiation Physics and Chemistry, 207, 110846.
https://doi.org/10.1016/j.radphyschem.2023.110846

Mališić V, Gajić V, Porobić S, Patarić A, Putić S, Vujčić I. The effect of gamma irradiation on the synthesis, microbiological sterility, and improvement of properties of PMMA-Al2O3 composite used in dental prosthesis manufacturing. in Radiation Physics and Chemistry. 2023;207:110846.
doi:10.1016/j.radphyschem.2023.110846 .

Mališić, Vanja, Gajić, Vuk, Porobić, Slavica, Patarić, Aleksandra, Putić, Slaviša, Vujčić, Ivica, "The effect of gamma irradiation on the synthesis, microbiological sterility, and improvement of properties of PMMA-Al2O3 composite used in dental prosthesis manufacturing" in Radiation Physics and Chemistry, 207 (2023):110846,
https://doi.org/10.1016/j.radphyschem.2023.110846 . .

TY  - JOUR
AU  - Porobić, Slavica
AU  - Božić, Bojan
AU  - Dramićanin, Miroslav
AU  - Vitnik, Vesna
AU  - Vitnik, Željko
AU  - Marinović-Cincović, Milena
AU  - Mijin, Dušan
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3417
AB  - A series of nine 5-(4-substituted phenylazo)-3-amido-6-hydroxy-4-methyl-2-pyridones were synthesized and characterized by FT–IR, 1H and 13C NMR, UV–Vis, and PL spectroscopy. Photophysical properties of the dyes were examined in solvents of various polarities and at different pH values. The solvent effects on the absorbance and emission spectral shift were analyzed using Lippert–Mataga, Reichardt–Dimroth and Kamlet-Taft equations. Moreover, UV–Vis absorption and emission frequencies were correlated with Hammett substituent constants applying the linear free energy relationships. DFT calculations of the investigated dyes were accomplished to determine their structural and electronic properties.
PB  - Elsevier
T2  - Dyes and Pigments
T1  - Absorption and fluorescence spectral properties of azo dyes based on 3-amido-6-hydroxy-4-methyl-2-pyridone: Solvent and substituent effects
VL  - 175
SP  - 108139
DO  - 10.1016/j.dyepig.2019.108139
ER  - 

@article{
author = "Porobić, Slavica and Božić, Bojan and Dramićanin, Miroslav and Vitnik, Vesna and Vitnik, Željko and Marinović-Cincović, Milena and Mijin, Dušan",
year = "2020",
abstract = "A series of nine 5-(4-substituted phenylazo)-3-amido-6-hydroxy-4-methyl-2-pyridones were synthesized and characterized by FT–IR, 1H and 13C NMR, UV–Vis, and PL spectroscopy. Photophysical properties of the dyes were examined in solvents of various polarities and at different pH values. The solvent effects on the absorbance and emission spectral shift were analyzed using Lippert–Mataga, Reichardt–Dimroth and Kamlet-Taft equations. Moreover, UV–Vis absorption and emission frequencies were correlated with Hammett substituent constants applying the linear free energy relationships. DFT calculations of the investigated dyes were accomplished to determine their structural and electronic properties.",
publisher = "Elsevier",
journal = "Dyes and Pigments",
title = "Absorption and fluorescence spectral properties of azo dyes based on 3-amido-6-hydroxy-4-methyl-2-pyridone: Solvent and substituent effects",
volume = "175",
pages = "108139",
doi = "10.1016/j.dyepig.2019.108139"
}

Porobić, S., Božić, B., Dramićanin, M., Vitnik, V., Vitnik, Ž., Marinović-Cincović, M.,& Mijin, D.. (2020). Absorption and fluorescence spectral properties of azo dyes based on 3-amido-6-hydroxy-4-methyl-2-pyridone: Solvent and substituent effects. in Dyes and Pigments
Elsevier., 175, 108139.
https://doi.org/10.1016/j.dyepig.2019.108139

Porobić S, Božić B, Dramićanin M, Vitnik V, Vitnik Ž, Marinović-Cincović M, Mijin D. Absorption and fluorescence spectral properties of azo dyes based on 3-amido-6-hydroxy-4-methyl-2-pyridone: Solvent and substituent effects. in Dyes and Pigments. 2020;175:108139.
doi:10.1016/j.dyepig.2019.108139 .

Porobić, Slavica, Božić, Bojan, Dramićanin, Miroslav, Vitnik, Vesna, Vitnik, Željko, Marinović-Cincović, Milena, Mijin, Dušan, "Absorption and fluorescence spectral properties of azo dyes based on 3-amido-6-hydroxy-4-methyl-2-pyridone: Solvent and substituent effects" in Dyes and Pigments, 175 (2020):108139,
https://doi.org/10.1016/j.dyepig.2019.108139 . .

TY  - JOUR
AU  - Porobić, Slavica
AU  - Božić, Bojan
AU  - Dramićanin, Miroslav
AU  - Vitnik, Vesna
AU  - Vitnik, Željko
AU  - Marinović-Cincović, Milena
AU  - Mijin, Dušan
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3418
AB  - A series of nine 5-(4-substituted phenylazo)-3-amido-6-hydroxy-4-methyl-2-pyridones were synthesized and characterized by FT–IR, 1H and 13C NMR, UV–Vis, and PL spectroscopy. Photophysical properties of the dyes were examined in solvents of various polarities and at different pH values. The solvent effects on the absorbance and emission spectral shift were analyzed using Lippert–Mataga, Reichardt–Dimroth and Kamlet-Taft equations. Moreover, UV–Vis absorption and emission frequencies were correlated with Hammett substituent constants applying the linear free energy relationships. DFT calculations of the investigated dyes were accomplished to determine their structural and electronic properties.
PB  - Elsevier
T2  - Dyes and Pigments
T1  - Absorption and fluorescence spectral properties of azo dyes based on 3-amido-6-hydroxy-4-methyl-2-pyridone: Solvent and substituent effects
VL  - 175
SP  - 108139
DO  - 10.1016/j.dyepig.2019.108139
ER  - 

@article{
author = "Porobić, Slavica and Božić, Bojan and Dramićanin, Miroslav and Vitnik, Vesna and Vitnik, Željko and Marinović-Cincović, Milena and Mijin, Dušan",
year = "2020",
abstract = "A series of nine 5-(4-substituted phenylazo)-3-amido-6-hydroxy-4-methyl-2-pyridones were synthesized and characterized by FT–IR, 1H and 13C NMR, UV–Vis, and PL spectroscopy. Photophysical properties of the dyes were examined in solvents of various polarities and at different pH values. The solvent effects on the absorbance and emission spectral shift were analyzed using Lippert–Mataga, Reichardt–Dimroth and Kamlet-Taft equations. Moreover, UV–Vis absorption and emission frequencies were correlated with Hammett substituent constants applying the linear free energy relationships. DFT calculations of the investigated dyes were accomplished to determine their structural and electronic properties.",
publisher = "Elsevier",
journal = "Dyes and Pigments",
title = "Absorption and fluorescence spectral properties of azo dyes based on 3-amido-6-hydroxy-4-methyl-2-pyridone: Solvent and substituent effects",
volume = "175",
pages = "108139",
doi = "10.1016/j.dyepig.2019.108139"
}

Porobić, S., Božić, B., Dramićanin, M., Vitnik, V., Vitnik, Ž., Marinović-Cincović, M.,& Mijin, D.. (2020). Absorption and fluorescence spectral properties of azo dyes based on 3-amido-6-hydroxy-4-methyl-2-pyridone: Solvent and substituent effects. in Dyes and Pigments
Elsevier., 175, 108139.
https://doi.org/10.1016/j.dyepig.2019.108139

Porobić S, Božić B, Dramićanin M, Vitnik V, Vitnik Ž, Marinović-Cincović M, Mijin D. Absorption and fluorescence spectral properties of azo dyes based on 3-amido-6-hydroxy-4-methyl-2-pyridone: Solvent and substituent effects. in Dyes and Pigments. 2020;175:108139.
doi:10.1016/j.dyepig.2019.108139 .

Porobić, Slavica, Božić, Bojan, Dramićanin, Miroslav, Vitnik, Vesna, Vitnik, Željko, Marinović-Cincović, Milena, Mijin, Dušan, "Absorption and fluorescence spectral properties of azo dyes based on 3-amido-6-hydroxy-4-methyl-2-pyridone: Solvent and substituent effects" in Dyes and Pigments, 175 (2020):108139,
https://doi.org/10.1016/j.dyepig.2019.108139 . .