Heterogeneous photoactive antimicrobial coatings based on a fluoroplastic doped with an octahedral molybdenum cluster compound

0543093 - ÚACH 2022 RIV GB eng J - Journal Article
Vorotnikova, N. A. - Bardin, V. A. - Vorotnikov, Y. A. - Kirakci, Kaplan - Adamenko, L. S. - Alekseev, A. Y. - Meyer, H. - Kubát, Pavel - Mironov, Y.V. - Lang, Kamil - Shestopalov, M.A.
Heterogeneous photoactive antimicrobial coatings based on a fluoroplastic doped with an octahedral molybdenum cluster compound.
Dalton Transactions. Roč. 50, č. 24 (2021), s. 8467-8475. ISSN 1477-9226. E-ISSN 1477-9234
R&D Projects: GA ČR(CZ) GC21-16084J
Institutional support: RVO:61388980 ; RVO:61388955
Keywords : photodynamic inactivation * photophysical properties * hexanuclear molybdenum * oxygen permeability * redox
OECD category: Inorganic and nuclear chemistry; Physical chemistry (UFCH-W)
Impact factor: 4.569, year: 2021
Method of publishing: Limited access
https://doi.org/10.1039/D1DT01102B

Despite the wide variety of strategies developed to combat pathogenic microorganisms, the infectious diseases they cause remain a worldwide health issue. Hence, the search for new disinfectants, which prevent infection spread, constitutes an extremely urgent task. One of the most promising methods is the use of photoactive compounds photosensitizers, capable of generating reactive oxygen species, in particular, singlet oxygen (O-2((1)Delta(g))), which causes rapid and effective death of microorganisms of all types. In this work, we propose the utilization of the powdered cluster complex (Bu4N)(2)[{Mo6I8}(OTs)(6)] as a photoactive additive to commercially available fluoroplastic lacquer F-32L to create heterogeneous self-sterilizing coatings. We show that soaking of the prepared films in water for 60 days did not lead to a decrease in their photosensitization properties indicating their excellent stability. Moreover, the use of the cluster complex in the solid state allowed significant expansion of the operating wavelength range, which covers the UV region and a large part of the visible region (250-650 nm). The films displayed high photoantimicrobial activity against five common pathogens (bacteria and fungi) under white-light irradiation. Overall, the properties demonstrated make these materials promising for practical use in everyday outdoor and indoor disinfection since they are active under both sunlight and artificial lighting.
Permanent Link: http://hdl.handle.net/11104/0320804


Research data: RSC publishing