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Photodynamic-active smart biocompatible material for an antibacterial surface coating
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SYSNO ASEP 0532315 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Photodynamic-active smart biocompatible material for an antibacterial surface coating Author(s) Kováčová, M. (SK)
Kleinová, A. (SK)
Vajďák, J. (CZ)
Humpolíček, P. (CZ)
Kubát, Pavel (UFCH-W) RID, ORCID, SAI
Bodík, M. (SK)
Marković, Z. (RS)
Špitálský, Z. (SK)Article number 112012 Source Title Journal of Photochemistry and Photobiology. B - Biology Section. - : Elsevier - ISSN 1011-1344
Roč. 211, OCT 2020 (2020)Number of pages 8 s. Language eng - English Country CH - Switzerland Keywords Antibacterial activity ; Hydrophobic carbon quantum dots ; Nanocomposite ; Photodynamic therapy ; Radicals Subject RIV CF - Physical ; Theoretical Chemistry OECD category Physical chemistry R&D Projects EF16_019/0000778 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Limited access Institutional support UFCH-W - RVO:61388955 UT WOS 000573437900006 EID SCOPUS 85090425406 DOI 10.1016/j.jphotobiol.2020.112012 Annotation Here we present a new effective antibacterial material suitable for a coating, e.g., surface treatment of textiles, which is also time and financially undemanding. The most important role is played by hydrophobic carbon quantum dots, as a new type of photosensitizer, produced by carbonization of different carbon precursors, which are incorporated by swelling from solution into various polymer matrices in the form of thin films, in particular polyurethanes, which are currently commercially used for industrial surface treatment of textiles. The role of hydrophobic carbon quantum dots is to work as photosensitizers upon irradiation and produce reactive oxygen species, namely singlet oxygen, which is already known as the most effective radical for elimination different kinds of bacteria on the surface or in close proximity to such modified material. Therefore, we have mainly studied the effect of hydrophobic carbon quantum dots on Staphylococcus aureus and the cytotoxicity tests, which are essential for the safe handling of such material. Also, the production of singlet oxygen by several methods (electron paramagnetic spectroscopy, time-resolved near-infrared spectroscopy), surface structures (atomic force microscopy and contact angle measurement), and the effect of radiation on polymer matrices were studied. The prepared material is easily modulated by end-user requirements. Workplace J. Heyrovsky Institute of Physical Chemistry Contact Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Year of Publishing 2021 Electronic address http://hdl.handle.net/11104/0310835
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