The Adsorption Kinetics and Characterization of Azobenzene Self-Assembled Monolayers on Gold

被引：11

作者：

Zhao Jianwei ^{[1
]}

Yu Huazhong ^{[1
]}

Wang Yongqiang ^{[1
]}

Tang Ming ^{[1
]}

Cai Shengmin ^{[1
]}

Liu Zhongfan ^{[1
]}

机构：

[1] Peking Univ, Ctr Intelligent Mat Res, Coll Chem & Mol Engn, Beijing 100871, Peoples R China

来源：

ACTA PHYSICO-CHIMICA SINICA | 1996年 / 12卷 / 07期

关键词：

Azobenzene; Self-assembled monolayers(SAMs); Atomic force; microscope(AFM); Contact angle titration; Electrochemistry;

D O I：

10.3866/PKU.WHXB19960702

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 characterization and adsorption kinetics or azobenzene self-assembled monolayers(C8AzoC3 SAMs) on gold were reported. By assembling for about 24 hours,, highly ordered and closely packed C8AzoC3 SAMs can be formed on gold surface and showed no electrochemical response, which were evidenced by contact angle titration, atomic force micro ogle observation and electrochemical measurements. The adsorption kinetics of C8AzoC3 molecules on gold was studied by controlling the assembling time and accompanying with dynamic characterization. The adsorption kinetic rate constant was estimated to be (1.2 +/- 0.2)x10(3) mol(-1).dm(3).s(-1) by using the data of contact angle titration and electrochemical measurements. A simple model of the self-assembling process was suggested to illustrate the unique electrochemical behavior of C8AzoC3 SAMs.

引用

页码：581 / 588

页数：8

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