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化学学报
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化学学报 ›› 2006, Vol. 64 ›› Issue (13): 1309-1313. 上一篇    下一篇

研究论文

表面活性剂对硫醇单层膜修饰金电极电化学行为的影响

马勇1,2，王建国2，惠飞2，霍俊杰2，臧树良*,1,2   

  1. (1华东师范大学化学系 上海 200062)
    (2辽宁大学稀散金属研究所 沈阳 110036)
  • 投稿日期:2005-08-02 修回日期:2006-03-14 发布日期:2006-07-14
  • 通讯作者: 臧树良

Influence of Surfactant on Electrochemical Behavior of Gold Electrode Modified with Thiol Monolayer

MA Yong1,2, WANG Jian-Guo2, HUI Fei2, HUO Jun-Jie2, ZANG Shu-Liang*,1,2   

  1. (1 Department of Chemistry, East China Normal University, Shanghai 200062)
    (2 Institute of Rare and Scattered Metal Chemistry, Liaoning University, Shenyang 110036)
  • Received:2005-08-02 Revised:2006-03-14 Published:2006-07-14
  • Contact: ZANG Shu-Liang

PDF

959

被引次数

29 | 3

利用自组装方法在金电极表面制备成硫醇单层膜, 循环伏安和交流阻抗实验表明硫醇单层膜与表面活性剂十六烷基三甲基溴化胺作用后, 其电化学行为发生变化, 对于带有不同电荷的探针分子, 表现出一定的选择性响应. 即使是带有相同电荷的探针分子, 由于与表面活性剂的作用方式不同, 也使它们通过硫醇单层膜在电极表面产生电化学响应的程度完全不同.

关键词: 自组装单层膜, 表面活性剂, 循环伏安法, 交流阻抗

Self-assembled monolayer of 1-dodecanethiol was prepared on gold electrode. The different kinds of probes such as ferrocyanide/ferricyanide, dopamine, ascorbic acid and hydroquinone were used to investigate the electron-transfer process in the presence of surfactant hexadecyltrimethylammonium bromide. Cyclic voltammetry and electrochemical impedance spectroscopy studies showed the selective electrochemical recognition of probe molecules in solution on self-assembled monolayer of thiol, and the possible mechanism was also discussed.

Key words: self-assembled monolayer, surfactant, cyclic voltammetry, ac impedance