Počet záznamů: 1
Infrared imaging of surface confluent polydopamine (PDA) films at the nanoscale
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SYSNO ASEP 0563595 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Infrared imaging of surface confluent polydopamine (PDA) films at the nanoscale Tvůrce(i) Král, M. (CZ)
Dendisová, M. (CZ)
Matějka, P. (CZ)
Svoboda, Jan (UMCH-V) ORCID, RID
Pop-Georgievski, Ognen (UMCH-V) RID, ORCIDČíslo článku 112954 Zdroj.dok. Colloids and Surfaces B-Biointerfaces. - : Elsevier - ISSN 0927-7765
Roč. 221, January (2023)Poč.str. 8 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova polydopamine ; anchoring layers ; self-assembly Vědní obor RIV CD - Makromolekulární chemie Obor OECD Polymer science CEP GA20-08679S GA ČR - Grantová agentura ČR Způsob publikování Omezený přístup Institucionální podpora UMCH-V - RVO:61389013 UT WOS 000890519300004 EID SCOPUS 85141326673 DOI 10.1016/j.colsurfb.2022.112954 Anotace Polydopamine (PDA) is one of the most commonly used materials for the preparation of protective adhesive layers for biomedical and tribological applications. Despite its widespread use, the way in which the polymer binds to the substrate is yet to be fully understood. At the nanometre level, the spatial arrangement of individual molecules and the initial growth of PDA layers are expected to be influenced by the utilized substrate material and PDA deposition time. To investigate these hypotheses, we have prepared PDA layers with various times of deposition on surfaces of gold and oxygen-terminated materials (silicon/silicon dioxide and nitrogen-doped titanium oxide). The prepared samples were subsequently analysed using a scattering-type scanning near-field optical microscope utilizing four irradiation energies in the mid-infrared region to detect the chemical contrast originating from vibrational modes of selected chemical moieties. It was found that the polymerization process leads to a formation of a surface confluent PDA layer and deposition of PDA nanoaggregates. The differences in the optical contrast observed at irradiation energies corresponding to the vibrations of indole units of PDA and quinoid groups of polymerization intermediates indicated a slightly different composition of the nanoaggregates and the surrounding confluent layer. Pracoviště Ústav makromolekulární chemie Kontakt Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Rok sběru 2024 Elektronická adresa https://www.sciencedirect.com/science/article/pii/S0927776522006385?via%3Dihub
Počet záznamů: 1