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Multifunctional polypyrrole@maghemite@silver composites: synthesis, physico-chemical characterization and antibacterial properties
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SYSNO ASEP 0490820 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Multifunctional polypyrrole@maghemite@silver composites: synthesis, physico-chemical characterization and antibacterial properties Tvůrce(i) Zasońska, Beata Anna (UMCH-V) RID, ORCID
Acharya, Udit (UMCH-V) RID, ORCID
Pfleger, Jiří (UMCH-V) RID
Humpolíček, P. (CZ)
Vajďák, J. (CZ)
Svoboda, Jan (UMCH-V) ORCID, RID
Petrovský, Eduard (GFU-E) ORCID, RID
Hromádková, Jiřina (UMCH-V) RID
Walterová, Zuzana (UMCH-V)
Bober, Patrycja (UMCH-V) RID, ORCID, SAIZdroj.dok. Chemical Papers. - : Springer - ISSN 0366-6352
Roč. 72, č. 7 (2018), s. 1789-1797Poč.str. 9 s. Jazyk dok. eng - angličtina Země vyd. SK - Slovensko Klíč. slova polypyrrole ; maghemite ; silver conductivity Vědní obor RIV CD - Makromolekulární chemie Obor OECD Polymer science Vědní obor RIV – spolupráce Geofyzikální ústav - Zemský magnetismus, geodézie, geografie CEP GA17-05095S GA ČR - Grantová agentura ČR Institucionální podpora UMCH-V - RVO:61389013 ; GFU-E - RVO:67985530 UT WOS 000435829800023 EID SCOPUS 85048874299 DOI 10.1007/s11696-018-0429-3 Anotace Maghemite (γ-Fe2O3) nanoparticles were synthesized by coprecipitation of ferrous and ferric salts with ammonia and oxidation with sodium hypochlorite. Polypyrrole (PPy) was obtained, by the chemical oxidative polymerization of pyrrole in an aqueous solution in the presence of iron oxide nanoparticles. The morphology of PPy was turned from globular to nanofibers by addition of dyes. The resulting PPy@γ-Fe2O3 hybrid composites were characterized by transmission electron microscopy, magnetic and electrical conductivity measurements and energy dispersive X-ray spectroscopy. Both the electrical conductivity and magnetic properties of the PPy@γ-Fe2O3 nanocomposites were controlled by the maghemite content due to the insulating properties of magnetic iron oxide nanoparticles added to the conducting polymer. Antibacterial activity of all materials was defined by determination of minimal inhibitory concentration. Antibacterial properties of native materials were improved by the reduction of silver ions from an aqueous solution to obtain PPy@γ-Fe2O3@silver composites. Due to the antibacterial properties of these composites, especially of those with silver particles, they can be considered for the applications where bacterial contamination can deteriorate the functionality of material. Pracoviště Ústav makromolekulární chemie Kontakt Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Rok sběru 2019
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