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Titolo:
Investigation of the structure of self-assembled monolayers of asymmetrical disulfides on Au(111) electrodes by electrochemical desorption
Autore:
Azehara, H; Yoshimoto, S; Hokari, H; Akiba, U; Taniguchi, I; Fujihira, M;
Indirizzi:
Tokyo Inst Technol, Dept Biomol Engn, Midori Ku, Yokohama, Kanagawa 2268501, Japan Tokyo Inst Technol Yokohama Kanagawa Japan 2268501 anagawa 2268501, Japan Kumamoto Univ, Fac Engn, Dept Appl Chem & Biochem, Kumamoto 8608555, JapanKumamoto Univ Kumamoto Japan 8608555 & Biochem, Kumamoto 8608555, Japan
Titolo Testata:
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
fascicolo: 1-2, volume: 473, anno: 1999,
pagine: 68 - 74
Fonte:
ISI
Lingua:
ENG
Soggetto:
SCANNING-TUNNELING-MICROSCOPY; ALKYL FLUOROALKYL DISULFIDES; CHEMICAL FORCE MICROSCOPY; ENHANCED RAMAN-SCATTERING; CONTACT-ANGLE GONIOMETRY; SINGLE-CRYSTAL ELECTRODE; ION MASS-SPECTROMETRY; ALKANETHIOLATE MONOLAYERS; PHASE-SEPARATION; CYTOCHROME-C;
Keywords:
gold; asymmetrical disulfides; binary self-assembled monolayers; phase separation; electrochemical desorption;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
69
Recensione:
Indirizzi per estratti:
Indirizzo: Fujihira, M Tokyo Inst Technol, Dept Biomol Engn, Midori Ku, 4259 Nagatsuta, Yokohama,Kanagawa 2268501, Japan Tokyo Inst Technol 4259 Nagatsuta Yokohama Kanagawa Japan 2268501
Citazione:
H. Azehara et al., "Investigation of the structure of self-assembled monolayers of asymmetrical disulfides on Au(111) electrodes by electrochemical desorption", J ELEC CHEM, 473(1-2), 1999, pp. 68-74

Abstract

In this paper the reductive desorption for homogeneously mixed self-assembled monolayers (SAMs) on Au(lll) electrodes formed from an asymmetrical disulfide, i.e. butyl hexadecyl disulfide [C4H9-S-S-C16H33; H4H16] or decyl 2-(perifluorohexyl)ethyl disulfide [C10H21-S-S-(CH2)(2)(CF)(5)CF3; H10F8] wasstudied by cyclic voltammetry. Peak potentials of electrochemical desorption waves for the SAMs of these asymmetrical disulfides were different from those of SAMs containing only one of the constituent chains. The peak potential deviation from those of the single component SAMs suggests mixing of the two constituent chains in molecular dimensions. The ratio of the two constituent chains of the asymmetrical disulfide in each of the SAMs was considered to be exactly 1:1 when the homogeneously mixed SAMs were prepared under favorable conditions with respect to reaction concentration and temperature. We will discuss features of cyclic voltammograms in terms of the structure of the SAMs. (C) 1999 Elsevier Science S.A. All rights reserved.

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Documento generato il 25/11/20 alle ore 04:02:58