Structure-Dependent Electron Transfer Kinetics of Azobenzene Self-Assembled Monolayers on Gold

被引：5

作者：

Zhao Jianwei ^{[1
]}

Yu Huazhong ^{[1
]}

Wang Yongqiang ^{[1
]}

Zhang Haoli ^{[1
]}

Liu Zhongfan ^{[1
]}

机构：

[1] Peking Univ, CIMR, Coll Chem & Mol Engn, Beijing 100871, Peoples R China

来源：

ACTA PHYSICO-CHIMICA SINICA | 1997年 / 13卷 / 01期

关键词：

Self-assembled monolayers (SAM); Azobenzene derivative; Highly organized molecular System; Apparent electron-transfer rate constant;

D O I：

10.3866/PKU.WHXB19970108

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The self-assembling process and electrochemical behavior of (4-ethoxy-4'-N-(2 ''-mercaptoethyl) aminocarbonyl-azobenzene monolayer on gold Were investigated by cyclic voltammetry and contact angle measurements. The it it electron transfer rate constant k(s) was found to decrease wan increasing the surface coverage. Taking account of the structural change associated with the reduction/oxidation process of azobenzene to hydrazobenzene the unique decrease of apparent electron-transfer rate constants could he well understood by the inhibition on such. a molecular structure change of close packing film structure, which may lend to an increase of activation free energy for the reduction/oxidation process.

引用

页码：42 / 47

页数：6

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