高等学校化学学报

高等学校化学学报 ›› 2005, Vol. 26 ›› Issue (7): 1360.

• 研究快报 • 上一篇    下一篇

光响应性超疏水偶氮苯自组装多层膜的制备及性质研究

姜武辉1,2, 王国杰2, 和亚宁3, 安永林1, 王晓工3, 宋延林2, 江雷2   

  1. 1. 大连理工大学化工学院,大连116023;
    2. 中国科学院化学研究所分子科学中心,北京100080;
    3. 清华大学化学工程系,材料科学与工程研究院,北京100084
  • 收稿日期:2005-03-08 出版日期:2005-07-10 发布日期:2005-07-10
  • 通讯作者: 安永林(1963年出生),男,博士,教授,博士生导师,从事无机材料化学研究.E-mail:ylan@dlut.edu.cn;王国杰(1971年出生),男,博士,副研究员,从事功能高分子研究.E-mail:gjwang@iccas.ac.Cn E-mail:gjwang@iccas.ac.Cn
  • 基金资助:

    国家自然科学基金(批准号:20374054,90306011)资助.

Properties of Photo-responsive Superhydrophobic Azobenzene Multilayers Fabricated by Electrostatic Self-assembly

JIANG Wu-Hui1,2, WANG Guo-Jie2, HE Ya-Ning3, AN Yong-Lin1, WANG Xiao-Gong3, SONG Yan-Lin2, JIANG Lei2   

  1. 1. College of Chemistry, Dalian University of Technology, Dalian 116024, China;
    2. Center of Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China;
    3. Department of Chemical Engineering, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
  • Received:2005-03-08 Online:2005-07-10 Published:2005-07-10

PDF (PC)

被引次数

32

关键词: 层层自组装, 偶氮苯, 超疏水性, 浸润性

Abstract: Azobenzene multilayers were fabricated on silicon substrates by electrostatic self-assembly technology. Rough silicon substrates were prepared by photolithography and the inductive coupling plasma deep etching technique. Surface morphology and properties of azobenzene multilayer on the silicon substrate were characterized by SEM, UV-Vis spectra and contact angle(CA) measurement. Superhydrophobicity(CA is larger than 150°) on the multilayer was obtained by introducing geometrical structure onto the substrate surface. For the flat silicon substrate, CA on 10 bilayers was 83.4°±2.1°. For the rough substrate, CA was 150.9°±1.7°. After UV irradiation the CA decreased. A large reversible CA change about 37° was realized through ultraviolet and visible irradiation on the rough azobenzene film, comparing with that about 5° on the flat film. These results indicate that the surface roughness plays an important role in tuning surface wettability. Moreover, the reversible switching by photo-irradiation could be realized many times, and a good reversibility of surface wettability was observed.

Key words: Layer-by-layer self-assembly, Azobenzene, Superhydrophobicity, Wettability

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