TY  - JOUR
AU  - Shaalan, Mohamed
AU  - Vykydalová, Anna
AU  - Švajdlenková, Helena
AU  - Kroneková, Zuzana
AU  - Marković, Zoran M.
AU  - Kováčová, Mária
AU  - Špitálský, Zdenko
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13310
AB  - 3D printing provides a lot of varieties for the manufacturing of personalized biomedical devices. Incorporation of the nanoparticles with potential antibacterial activity to the printed materials is another added value. One example of such nanoparticles are hydrophobic carbon quantum dots (hCQDs), which are zero-dimensional redox-active materials with high chemical stability and low production costs. They produce singlet oxygen only when activated by a specific wavelength of visible blue light which allows for controlled antibacterial action and minimizes the chances of bacterial resistance emergence. We prepared and characterized polymer composites based on thermoplastic elastomers (TPE) doped with hCQDs (TPE/hCQDs). The composites were 3D printed using fused deposition modeling method. In the first set of samples, a filament of pure TPE was immersed in a solution of hCQDs (0.5 mg/mL), then 3D printed, and compared with unmodified TPE filament. The mechanical properties, swelling behavior, hardness, and thermal stability of TPE/hCQDs were compared with the pure TPE printed samples. The production of singlet oxygen was confirmed by the electron paramagnetic resonance method. The antibacterial activity of the samples was tested according to ISO 22196 against Staphylococcus aureus and Escherichia coli after one hour of exposure to blue light, which completely inhibited bacterial growth. Besides, the cytotoxicity of samples was evaluated by MTT assay, and no significant effect of the materials on cell viability was observed. 3D printed materials with antibacterial activity represent a perspective for the future, especially in the field of personalized medicine, as well as in products for other industries.
T2  - Polymer Bulletin
T1  - Antibacterial activity of 3D printed thermoplastic elastomers doped with carbon quantum dots for biomedical applications
DO  - 10.1007/s00289-024-05339-1
ER  - 

@article{
author = "Shaalan, Mohamed and Vykydalová, Anna and Švajdlenková, Helena and Kroneková, Zuzana and Marković, Zoran M. and Kováčová, Mária and Špitálský, Zdenko",
year = "2024",
abstract = "3D printing provides a lot of varieties for the manufacturing of personalized biomedical devices. Incorporation of the nanoparticles with potential antibacterial activity to the printed materials is another added value. One example of such nanoparticles are hydrophobic carbon quantum dots (hCQDs), which are zero-dimensional redox-active materials with high chemical stability and low production costs. They produce singlet oxygen only when activated by a specific wavelength of visible blue light which allows for controlled antibacterial action and minimizes the chances of bacterial resistance emergence. We prepared and characterized polymer composites based on thermoplastic elastomers (TPE) doped with hCQDs (TPE/hCQDs). The composites were 3D printed using fused deposition modeling method. In the first set of samples, a filament of pure TPE was immersed in a solution of hCQDs (0.5 mg/mL), then 3D printed, and compared with unmodified TPE filament. The mechanical properties, swelling behavior, hardness, and thermal stability of TPE/hCQDs were compared with the pure TPE printed samples. The production of singlet oxygen was confirmed by the electron paramagnetic resonance method. The antibacterial activity of the samples was tested according to ISO 22196 against Staphylococcus aureus and Escherichia coli after one hour of exposure to blue light, which completely inhibited bacterial growth. Besides, the cytotoxicity of samples was evaluated by MTT assay, and no significant effect of the materials on cell viability was observed. 3D printed materials with antibacterial activity represent a perspective for the future, especially in the field of personalized medicine, as well as in products for other industries.",
journal = "Polymer Bulletin",
title = "Antibacterial activity of 3D printed thermoplastic elastomers doped with carbon quantum dots for biomedical applications",
doi = "10.1007/s00289-024-05339-1"
}

Shaalan, M., Vykydalová, A., Švajdlenková, H., Kroneková, Z., Marković, Z. M., Kováčová, M.,& Špitálský, Z.. (2024). Antibacterial activity of 3D printed thermoplastic elastomers doped with carbon quantum dots for biomedical applications. in Polymer Bulletin.
https://doi.org/10.1007/s00289-024-05339-1

Shaalan M, Vykydalová A, Švajdlenková H, Kroneková Z, Marković ZM, Kováčová M, Špitálský Z. Antibacterial activity of 3D printed thermoplastic elastomers doped with carbon quantum dots for biomedical applications. in Polymer Bulletin. 2024;.
doi:10.1007/s00289-024-05339-1 .

Shaalan, Mohamed, Vykydalová, Anna, Švajdlenková, Helena, Kroneková, Zuzana, Marković, Zoran M., Kováčová, Mária, Špitálský, Zdenko, "Antibacterial activity of 3D printed thermoplastic elastomers doped with carbon quantum dots for biomedical applications" in Polymer Bulletin (2024),
https://doi.org/10.1007/s00289-024-05339-1 . .

TY  - JOUR
AU  - Budimir, Milica
AU  - Marković, Zoran M.
AU  - Jovanović, Dragana J.
AU  - Vujisić, Miloš
AU  - Mičušík, Matej
AU  - Danko, Martin
AU  - Kleinová, Angela
AU  - Švajdlenková, Helena
AU  - Špitalský, Zdeno
AU  - Todorović-Marković, Biljana
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9827
T2  - RSC Advances
T1  - Erratum: Gamma ray assisted modification of carbon quantum dot/polyurethane nanocomposites: structural, mechanical and photocatalytic study
VL  - 10
IS  - 12
SP  - 7125
DO  - 10.1039/D0RA90015J
ER  - 

@article{
author = "Budimir, Milica and Marković, Zoran M. and Jovanović, Dragana J. and Vujisić, Miloš and Mičušík, Matej and Danko, Martin and Kleinová, Angela and Švajdlenková, Helena and Špitalský, Zdeno and Todorović-Marković, Biljana",
year = "2020",
journal = "RSC Advances",
title = "Erratum: Gamma ray assisted modification of carbon quantum dot/polyurethane nanocomposites: structural, mechanical and photocatalytic study",
volume = "10",
number = "12",
pages = "7125",
doi = "10.1039/D0RA90015J"
}

Budimir, M., Marković, Z. M., Jovanović, D. J., Vujisić, M., Mičušík, M., Danko, M., Kleinová, A., Švajdlenková, H., Špitalský, Z.,& Todorović-Marković, B.. (2020). Erratum: Gamma ray assisted modification of carbon quantum dot/polyurethane nanocomposites: structural, mechanical and photocatalytic study. in RSC Advances, 10(12), 7125.
https://doi.org/10.1039/D0RA90015J

Budimir M, Marković ZM, Jovanović DJ, Vujisić M, Mičušík M, Danko M, Kleinová A, Švajdlenková H, Špitalský Z, Todorović-Marković B. Erratum: Gamma ray assisted modification of carbon quantum dot/polyurethane nanocomposites: structural, mechanical and photocatalytic study. in RSC Advances. 2020;10(12):7125.
doi:10.1039/D0RA90015J .

Budimir, Milica, Marković, Zoran M., Jovanović, Dragana J., Vujisić, Miloš, Mičušík, Matej, Danko, Martin, Kleinová, Angela, Švajdlenková, Helena, Špitalský, Zdeno, Todorović-Marković, Biljana, "Erratum: Gamma ray assisted modification of carbon quantum dot/polyurethane nanocomposites: structural, mechanical and photocatalytic study" in RSC Advances, 10, no. 12 (2020):7125,
https://doi.org/10.1039/D0RA90015J . .