Počet záznamů: 1
Adsorption, 2D-condensation, and redox reactions of bile acids on the hanging mercury drop electrode
- 1.
SYSNO ASEP 0583488 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Adsorption, 2D-condensation, and redox reactions of bile acids on the hanging mercury drop electrode Tvůrce(i) Jelsikova, K. (CZ)
Yershova, P. (CZ)
Fojt, Lukáš (BFU-R) RID, ORCID
Fojta, Miroslav (BFU-R) RID, ORCID
Schwarzová-Pecková, K. (CZ)Celkový počet autorů 5 Číslo článku 117887 Zdroj.dok. Journal of Electroanalytical Chemistry. - : Elsevier - ISSN 1572-6657
Roč. 950, DEC 1 2023 (2023)Poč.str. 7 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova self-assembled monolayers ; 2-dimensional condensation ; adenine adsorption ; 2d condensation ; derivatives ; chemistry ; au(111) ; dna ; 5-fluorocytosine Vědní obor RIV CG - Elektrochemie Obor OECD Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis) Způsob publikování Omezený přístup Institucionální podpora BFU-R - RVO:68081707 UT WOS 001109764500001 EID SCOPUS 85175810964 DOI 10.1016/j.jelechem.2023.117887 Anotace Bile acids (BAs) are natural surfactants thanks to the facial amphiphilic character of the steroid skeleton. For the first time, the electrochemical and adsorption behaviour of selected bile acids differing in the number of hydroxyl groups on the steroid skeleton lithocholic acid (3 alpha-OH), deoxycholic acid (3 alpha-and 12 alpha-OH), and cholic acid (3 alpha-, 7 alpha-and 12 alpha-OH) was investigated on hanging mercury drop electrode (HMDE) in mixed Britton Robinson buffer: methanol (9:1) media. In cyclic voltammetry, all BAs yielded a negative signal at the potential of ca-1.4 V with intensity depending on pH of the solution. Further, sharp tensammetric signals confirming adsorption/desorption or re-organization processes of the adsorbed molecules were observed. AC voltammetric measurements revealed two-dimensional (2D) condensation of lithocholic acid in the pH range 12.0-7.0 visualized by the formation of a capacitance pit. Adsorption of the other studied BAs was indicated by the AC current density decrease. Measurements of differential capacitance dependencespotential (C-E curves) revealed this behaviour to be concentration and temperature dependent. A study on effect of halides (Cl-, Br-, I-) on the adsorption of bile acids showed involvement of primarily hydrophobic interactions in the BA interaction with the HMDE surface. Pracoviště Biofyzikální ústav Kontakt Jana Poláková, polakova@ibp.cz, Tel.: 541 517 244 Rok sběru 2024 Elektronická adresa https://www.sciencedirect.com/science/article/pii/S1572665723007476?via%3Dihub
Počet záznamů: 1