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Preparation of smart surfaces based on PNaSS@PEDOT microspheres: testing of E. coli detection
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SYSNO ASEP 0556325 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Preparation of smart surfaces based on PNaSS@PEDOT microspheres: testing of E. coli detection Tvůrce(i) Tomšík, Elena (UMCH-V) RID, ORCID
Laishevkina, Svetlana (UMCH-V)
Svoboda, Jan (UMCH-V) ORCID, RID
Gunár, Kristýna (UMCH-V) RID, ORCID
Hromádková, Jiřina (UMCH-V) RID
Shevchenko, N. (RU)Číslo článku 2784 Zdroj.dok. Sensors. - : MDPI
Roč. 22, č. 7 (2022)Poč.str. 15 s. Jazyk dok. eng - angličtina Země vyd. CH - Švýcarsko Klíč. slova PEDOT ; PNaSS ; impedance Vědní obor RIV CD - Makromolekulární chemie Obor OECD Polymer science CEP NU20-06-00424 GA MZd - Ministerstvo zdravotnictví Způsob publikování Open access Institucionální podpora UMCH-V - RVO:61389013 UT WOS 000781308900001 EID SCOPUS 85127548197 DOI 10.3390/s22072784 Anotace The main task of the research is to acquire fundamental knowledge about the effect of polymer structure on the physicochemical properties of films. A novel meta-material that can be used in manufacturing sensor layers was developed as a model. At the first stage, poly(sodium 4-styrenesulfonate) (PNaSS) cross-linked microspheres are synthesized (which are based on strong polyelectrolytes containing sulfo groups in each monomer unit), and at the second stage, PNaSS@PEDOT microspheres are formed. The poly(3,4-ethylenedioxythiophene) (PEDOT) shell was obtained by the acid-assisted self-polymerization of the monomer. This process is biologically safe and thus suitable for biomedical applications. The suitability of electrochemical impedance spectroscopy for E. coli detection was tested. It was revealed that the attached bacterial wall was destroyed upon application of constant oxidation potential (higher than 0.5 V), which makes the PNaSS@PEDOT microsphere particles promising materials for the development of antifouling coatings. Furthermore, under open-circuit conditions, the walls of E. coli bacteria were not destroyed, which opens up the possibility of employing such meta-materials as sensor films. Scanning electron microscopy, X-ray photoelectron spectroscopy, water contact angle, and wide-angle X-ray diffraction methods were applied in order to characterize the PNaSS@PEDOT films. Pracoviště Ústav makromolekulární chemie Kontakt Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Rok sběru 2023 Elektronická adresa https://www.mdpi.com/1424-8220/22/7/2784
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