Electrochemical study of 1,4-benzoquinone on gold surface modified

被引：6
作者：
Rojas de Astudillo, Luisa [3 ]
Rivera, Linoshka [1 ]
Brito-Gomez, Rosa [2 ]
Tremont, Rolando J. [1 ]
机构：
[1] Univ Puerto Rico Humacao, Dept Chem, CUH Stn, Humacao, PR 00791 USA
[2] Interamer Univ PR, Dept Nat Sci, San Juan, PR 00919 USA
[3] Univ Oriente, Dept Quim, Cumana Sucre, Venezuela
来源：
JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2010年 / 640卷 / 1-2期
关键词：
SAM; 2-Propene-1-thiol; 1,3-Propanedithiol; Gold; 1,4-Benzoquinone; CV; SELF-ASSEMBLED MONOLAYERS; TETRADENTATE LIGAND MONOLAYERS; ORGANIZED THIOL MONOLAYERS; ELECTRON-TRANSFER KINETICS; RAMAN-SCATTERING; MECHANISTIC EVALUATION; COATED ELECTRODES; REDOX CENTERS; VOLTAMMETRY; MEMBRANES;
D O I：
10.1016/j.jelechem.2010.01.005
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The electrochemical behavior of 1,4-benzoquinone has been studied immobilizing this molecule on a gold electrode modified with I-propanethiol (1-PT), 2-propene-1-thiol (2-P-1-T) and 1,3-propanedithiol (1,3-PDT). In the method used (self-assembled techniques) for the surface modification we control the exposure time of gold surface in the modifier/ethanol solution. This study was followed by cyclic voltammetry (CV) analysis. We demonstrated that the gold surface was modified by I-PT, 2-P-1-T and 1,3-PDT compounds. Also, shown was the electrochemical detection of 1,4-benzoquinone (BQ) on these surface and electrochemical behavior of hydroquinone (H(2)Q) moiety formed after the Michael addition reaction between the BQ and the thiol (-SH) group on gold surface (see Scheme I). The better system was Au/2-P-1-T/1,3-PDT/H(2)Q Published by Elsevier B.V.
引用
收藏
页码：56 / 60
页数：5
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