Electrochemical characterization of the self-assembled monolayer of 6-thioguanine on the mercury electrode

被引：10
作者：
Arias, ZG [1 ]
Alvarez, JLM [1 ]
Fonseca, JML [1 ]
机构：
[1] Univ Oviedo, Dept Quim Fis & Analit, E-33071 Oviedo, Spain
来源：
ELECTROANALYSIS | 2004年 / 16卷 / 12期
关键词：
6-thioguanine; self-assembled monolayer (SAM); mercury; cyclic voltammetry;
D O I：
10.1002/elan.200302912
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A self-assembled monolayer (SAM) of 6-thioguanine (6TG) was formed on the hanging mercury drop electrode, under open circuit potential, from 6TG solutions. The SAM has been characterized by cyclic voltammetry under both in situ and ex situ conditions and the experimental data reveal that the film is a densely packed structure of chemisorbed (mercury-thiol) molecules. The presence of this SAM has no influence on the rate of outer-sphere electrode reactions but strongly inhibits inner-sphere processes. The electrode reaction involving the Fe(CN)(6)(3-/4-) couple appears reversible in a hanging mercury drop electrode coated by the 6TG-SAM.
引用
收藏
页码：1044 / 1050
页数：7
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