物理化学学报 >> 1999, Vol. 15 >> Issue (03): 198-203.doi: 10.3866/PKU.WHXB19990302

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新型偶氮苯硫醇衍生物自组装膜的制备与结构表征

李海英, 张浩力, 张锦, 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|抚顺石油学院石油化工系，抚顺 113001;兰州大学化学系，兰州 730000
  • 收稿日期:1998-11-09 修回日期:1998-12-21 发布日期:1999-03-15
  • 通讯作者: 刘忠范

Preparation and Structural Characterization of Self-assembled Monolayers from a New Series of Mercapto Contained Azobenzene Derivatives

Li Hai-Ying, Zhang Hao-Li, Zhang Jin, Liu Zhong-Fan   

  1. Center for Intelligent Material Research(CIMR),College of Chemistry and Molecular Engineering,Peking University,Beijing 100871;Petrochemical Department,Fushu Petroleum Institute,Fushun 113001|Department of Chemistry,Lanzhou University,Lanzhou 730000
  • Received:1998-11-09 Revised:1998-12-21 Published:1999-03-15
  • Contact: Liu Zhong-Fan

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关键词: 自组装单分子膜, 偶氮苯硫醇衍生物, 反射红外光谱, 接触角测量

Abstract:

Self Assembled Monolayers(SAMs) of a series of mercapto contained azobenzene derivatives with the structure of CnH2n+1AzoO(CH 2)mSH (where n =4,6,8,10,12; with m =3,5 respectively) were prepared and characterized. Wettability measurement of water on the SAMs demonstrates that molecular packing density in the monolayers increases while the alkyl chain in the molecules is lengthened. Both the n and m values have similar contribution to the wetting property of SAMs. The RA IR spectra reveal that the alkyl chains in the SAMs tilt away dramatically from the surface normal direction with the increase in their length. However, the orientation of azobenzene moiety is found to be influenced slightly by the alkyl chain length, which is due to the tenderness of the molecule.

Key words: Self-assembled monolayers(SAMs), Azobenzene derivatives, Contact angle measure