物理化学学报 >> 2002, Vol. 18 >> Issue (09): 846-849.doi: 10.3866/PKU.WHXB20020917

研究简报 上一篇    下一篇

席夫碱自组装单分子膜的电化学行为

王宁;丁克强;童汝亭;邵会波   

  1. 河北师范大学化学系,石家庄　050016；首都师范大学化学系,超分子化学与分子工程学实验室,北京　100037
  • 收稿日期:2001-12-27 修回日期:2002-04-16 发布日期:2002-09-15
  • 通讯作者: 邵会波 E-mail:huiboshao@263.net

The Electrochemical Behavior of Self-assembled Monolayers of Schiff Base

Wang Ning;Ding Ke-Qiang;Tong Ru-Ting;Shao Hui-Bo   

  1. Department of Chemistry, Hebei Normal University, Shijiazhuang　050016;Department of Chemistry, Capital Normal University, Beijing　100037
  • Received:2001-12-27 Revised:2002-04-16 Published:2002-09-15
  • Contact: Shao Hui-Bo E-mail:huiboshao@263.net

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摘要： 利用自组装技术将席夫碱硫醇衍生物在金表面形成自组装单分子膜,并初步研究了此自组装单分子膜的电化学行为,发现该席夫碱分子在0.1 mol•L－1的KCl溶液中具有电化学不可逆氧化还原行为，且随着自组装时间的增加表观电极反应速率常数值显著减小,最后减小为0,并对此进行了解释.

关键词: 席夫碱, 自组装单分子膜, 循环伏安法, 氧化还原, 表观电子转移速率常数

Abstract: The gold electrode was modified with a derivative compound of Schiff base. Cyclic voltammetric technique was used to investigate the electrochemical behavior of the electrode. An electrochemical irreversible reduction/oxidation process of the schiff base molecule in 0.1 mol•L－1 KCl solution was found. Electrochemical study shows that the apparent electron-transfer rate constant (kapp) decreases with the increasing of assembled time. Considering the effecting factors on the apparent electron-transfer rate, we deduced that the main factor effecting Schiff bases electrochemical behavior is the interaction force between the Schiff bases molecules. This interaction affects the changing of structure during the electrochemical redox process.

Key words: Schiff base, Self-assembled monolayers (SAMs), Cyclic voltammetry, 　Redox, Apparent electron transfer rate constant