高等学校化学学报 ›› 1997, Vol. 18 ›› Issue (2): 300.

• 研究简报 • 上一篇    下一篇

新型偶氮苯自组装一LB组合有序膜的构造与表征

赵春侠, 于化忠, 王永强, 蔡生民, 刘忠范   

  1. 北京大学化学与分子工程学院智能材料研究中心, 北京, 100871
  • 收稿日期:1996-01-11 出版日期:1997-02-24 发布日期:1997-02-24
  • 通讯作者: 刘忠范
  • 作者简介:赵春侠, 女, 24岁, 硕士研究生.
  • 基金资助:

    国家攀登计划;国家自然科学基金

Fabrication and Characterization of a Novel Azobenzene SAM-LB Composite Film

ZHAO Chun-Xia, YU Hua-Zhong, WANG Yong-Qiang, CAI Sheng-Min, LIU Zhong-Fan   

  1. Center for Intelligent Materials Research, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871
  • Received:1996-01-11 Online:1997-02-24 Published:1997-02-24

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

Abstract: Anovel azobenzene SAM-LBcomposite 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-LBinterface, which was evidenced by both contact-angle titration, RA-FTIRand 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 pHdependent electron-transfer kinetic behavior of azobenzene was shown within the novel SAM-LBcomposite films.

Key words: Self-assembled monolayers, LB film, Azobenzene, trans/cis-Isomerization, Electrochemical kinetics

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