Voltammetric determination of electron transfer kinetic parameters in hydroquinone-terminated self-assembled monolayers on gold

被引：30
|
作者：
Hong, HG [1 ]
Park, W [1 ]
Yu, E [1 ]
机构：
[1] Sejong Univ, Dept Chem, Seoul 143747, South Korea
来源：
JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 1999年 / 476卷 / 02期
关键词：
distance-dependence of electron transfer; electron transfer kinetic parameter; electron tunneling constant; hydroquinone-terminated self-assembled monolayer;
D O I：
10.1016/S0022-0728(99)00380-0
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
This paper reports the electron tunneling constant (beta) and distance dependence of the long range electron transfer kinetic parameters in the 2-(n-mercaptoalkyl)hydroquinone (abbreviated as H(2)Q(CH2)nSH, where n = 1, 4, 6, 8, and 10) self-assembled monolayers (SAMs) on gold electrodes in acidic solution. A logarithmic dependence of the heterogeneous electron transfer rate constant for the redox reaction of hydroquinone (H(2)Q) on the thickness of the monolayer was obtained and the beta value in the H(2)Q SAM system was determined to be (0.99+/-0.06) per methylene group in the alkyl chain spacer. (C) 1999 Elsevier Science S.A. All rights reserved.
引用
收藏
页码：177 / 181
页数：5
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