新型偶氮苯自组装一LB组合有序膜的构造与表征

被引：1

作者：

赵春侠

于化忠

王永强

蔡生民

刘忠范

机构：

[1] 北京大学化学与分子工程学院智能材料研究中心!北京

[2] O

[3] 北京大学化学与分子工程学院智能材料

来源：

高等学校化学学报 | 1997年 / 02期

基金：

国家攀登计划;

关键词：

自组装单分子膜; LB膜; 偶氮苯; 顺反导构化; 电化学动力学;

D O I：

暂无

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A novel azobenzene SAM-LB composite film was fabricated by depositing LangmuirBlodgett monolayer of 4-octyl-4' - (3-carboxy-trimethylene-oxy)-azobenzene (ABD) onto the cysteamine self-assembled monolayer(AET SAM) modified gold substrate. The film stability was greatly improved and the molecular aggregation was effectively prevented by the strong ionic bonding character on the SAM-LB interface, which was evidenced by both contact-angle titration, RA-FTIR and AFM. The reversible tran/cis isomerization and the clear-cut electrochemical response of cis-azobenzene were observed in the presence of highly organized molecular assemblies. This enable us to carry out a kinetic study of the cis-azobenzene in highly organized monolayers, by which a "more" reversible and unique pH dependent electron-transfer kinetic behavior of azobenzene was shown within the novel SAM-LB composite films.

引用

页码：300 / 302

页数：3