Electrochemical behavior of polycrystalline gold electrode modified by thiolated calix[4]arene and undecanethiol

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F18%3A10378560" target="_blank" >RIV/00216208:11310/18:10378560 - isvavai.cz</a>

Alternative codes found

RIV/61388955:_____/18:00490131

Result on the web

<a href="https://doi.org/10.1016/j.jelechem.2018.01.055" target="_blank" >https://doi.org/10.1016/j.jelechem.2018.01.055</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jelechem.2018.01.055" target="_blank" >10.1016/j.jelechem.2018.01.055</a>

Result language

angličtina

Original language name

Electrochemical behavior of polycrystalline gold electrode modified by thiolated calix[4]arene and undecanethiol

Original language description

The electrochemical behavior of polycrystalline gold electrode (PAuE) modified by self-assembled monolayers (SAMs) of thiolated calix[4]arene (C4A) and undecanethiol (C11) was investigated by voltammetric methods and electrochemical impedance spectroscopy. Coverage of the thiol SAMs and their stability was tested. The C11 layer is very stable; the desorption peak was recorded only in basic solutions of pH 12 and higher (at -1.30 V vs. Ag vertical bar AgCl (3 mol L-1 KCl)). The position of the C4A desorption peak is more pH dependent and it was recorded at -1.08 V at pH 13. Molecular coverage for C4A and C11 SAMs modified PAuE is 364 +/- 52.9 mu C cm(-2) and 137 +/- 20.0 mu C cm(-2) respectively. The properties of the PAuE modified by C11 and/or C4A were investigated using the model compounds hydroquinone, ferrocene and potassium ferrocyanide. It is assumed that the oxidation of the hydroquinone cannot be realized inside the C4A cavity because the hydroquinone molecule is too big to enter the cavity. Similar behavior was observed using potassium ferrocyanide. In contrast, cyclic voltammograms of ferrocene oxidation were only negligibly affected by the electrode modification. Moreover, capacitance measurements proved accumulation of ferrocenium ions at the C4A modified electrode.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10403 - Physical chemistry

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Electroanalytical Chemistry

ISSN

1572-6657

e-ISSN

—

Volume of the periodical

821

Issue of the periodical within the volume

July

Country of publishing house

CH - SWITZERLAND

Number of pages

7

Pages from-to

60-66

UT code for WoS article

000437818600010

EID of the result in the Scopus database

2-s2.0-85041517012