Electrochemical properties of a gold electrode modified with a mixed monolayer

Kô Takehara, Yasushi Ide

研究成果: ジャーナルへの寄稿記事

3 引用 (Scopus)

抄録

The electrochemical properties of a gold electrode modified with a mixed thiol monolayer containing both a polar and a non-polar head group have been investigated in aqueous Fe(CN)4-6, flavin adenine dinucleotide (FAD) and ubiquinone-0 (2,3-dimethoxy-5-methyl-1,4-benzoquinone, UQ0) solutions. The cyclic voltammetric current-potential (i - E) response of Fe(CN)4-6 was found to be affected considerably by the polarity of the head group contained in the mixed monolayer assembly, as compared with those of FAD and UQ0. It was also found that in the cases of UQ0 and FAD the i - E responses for the modified electrode were affected by their own molecular size rather than the polarity of the mixed monolayer head group. Furthermore, compared with Fe(CN)4-6 ion, these biologically related molecules are able to permeate readily into the well-organized and hydrophobic alkyl chains of the monolayer assembly. The voltammetric profile of UQ0 was improved by the modification of aminoethanethiol, as compared with those of bare gold and the electrode modified with other polar thiols. Further, two different permeation paths of the electrode species into the mixed monolayer are suggested from the variation of the i - E response with the cycle of the potential scan.

元の言語英語
ページ(範囲)207-219
ページ数13
ジャーナルJournal of Electroanalytical Chemistry
342
発行部数2
DOI
出版物ステータス出版済み - 4 1992

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Electrochemical properties
Gold
Monolayers
Flavin-Adenine Dinucleotide
Electrodes
Sulfhydryl Compounds
Permeation
Ions
Molecules
ubiquinone-O

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Chemical Engineering(all)
  • Electrochemistry

これを引用

Electrochemical properties of a gold electrode modified with a mixed monolayer. / Takehara, Kô; Ide, Yasushi.

:: Journal of Electroanalytical Chemistry, 巻 342, 番号 2, 04.1992, p. 207-219.

研究成果: ジャーナルへの寄稿記事

Takehara, Kô ; Ide, Yasushi. / Electrochemical properties of a gold electrode modified with a mixed monolayer. :: Journal of Electroanalytical Chemistry. 1992 ; 巻 342, 番号 2. pp. 207-219.
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