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Antibacterial nitric oxide- and singlet oxygen-releasing polystyrene nanoparticles responsive to light and temperature triggers
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SYSNO ASEP 0487024 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Antibacterial nitric oxide- and singlet oxygen-releasing polystyrene nanoparticles responsive to light and temperature triggers Author(s) Dolanský, Jiří (UACH-T) ORCID, RID, SAI
Henke, P. (CZ)
Malá, Z. (CZ)
Žárská, L. (CZ)
Kubát, Pavel (UFCH-W) RID, ORCID, SAI
Mosinger, Jiří (UACH-T) RID, ORCID, SAISource Title Nanoscale. - : Royal Society of Chemistry - ISSN 2040-3364
Roč. 10, č. 5 (2018), s. 2639-2648Number of pages 10 s. Language eng - English Country GB - United Kingdom Keywords nanofiber materials ; porphyrin photosensitizers ; photophysical properties ; reactive oxygen Subject RIV CA - Inorganic Chemistry OECD category Inorganic and nuclear chemistry Subject RIV - cooperation J. Heyrovsky Institute of Physical Chemistry - Physical ; Theoretical Chemistry R&D Projects GA16-15020S GA ČR - Czech Science Foundation (CSF) Institutional support UACH-T - RVO:61388980 ; UFCH-W - RVO:61388955 UT WOS 000424075400053 EID SCOPUS 85041454084 DOI 10.1039/c7nr08822a Annotation Novel therapies to prevent bacterial infections are of utmost importance in biomedical research due to the emergence of multidrug-resistant strains of bacteria. Herein, we report the preparation, characterization and antibacterial evaluation of sulfonated polystyrene nanoparticles simultaneously releasing two antibacterial species, nitric oxide (NO) and singlet oxygen (O-2((1)Delta(g))), upon irradiation with visible light. The nanoparticles were prepared by simple and scalable processes from nanofiber membranes with an encapsulated NO photodonor and/or ionically entangled tetracationic porphyrin/phthalocyanine photosensitizers. The release of NO and O-2((1)Delta(g)) from the polystyrene nanoparticles is controlled by light wavelength and dose, as well as by temperature, which influences the diffusion coefficient and solubility of both species in the polystyrene matrix. The concentrations of NO and O-2((1)Delta(g)) were measured by amperometric and time-resolved spectroscopic techniques and by chemical analysis. Due to the efficient photogeneration of both species at physiological temperature and resultant strong antibacterial action observed on Escherichia coli, the nanoparticles are a promising material for antibacterial applications triggered/modulated by light and temperature. Workplace Institute of Inorganic Chemistry Contact Jana Kroneislová, krone@iic.cas.cz, Tel.: 311 236 931 Year of Publishing 2019
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