物理化学学报 >> 1996, Vol. 12 >> Issue (09): 836-840.doi: 10.3866/PKU.WHXB19960912

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半花菁分子在LB多层膜中的取向研究

徐永生,韩奎,徐建华,周广朋,陆兴泽   

  1. 复旦大学物理系，上海 200433
  • 收稿日期:1996-01-26 修回日期:1996-04-01 发布日期:1996-09-15
  • 通讯作者: 陆兴泽

Studies on Azimuthal Orientation of Hemicyanine Molecules in LB Films

Xu Yong-Sheng,Han Kui,Xu Jian-Hua,Zhou Guang-Peng,Lu Xing-Ze   

  1. Department of Physics,Fudan University,Shanghai 200433
  • Received:1996-01-26 Revised:1996-04-01 Published:1996-09-15
  • Contact: Lu Xing-Ze

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关键词: Langmuir-Blodgett多层膜, 偏振紫外, 可见吸收, 各项异性, 半花菁

Abstract:

Polarized UV-visible absorption spectroscopy was used to investigate the inplane orientation of the hemicyanine molecules in Y-type Langmuir-Blodgett(LB) multilayers. We demonstrated for the first time that the dipping-induced molecular alignment was enhanced significantly with increasing the layer number due to the interlayer interactions. Polarized UV nanosecond pulses were used to control the photoinduced reorientation of the hemicyanine molecules. Thermal-isotropic process was accompaniedd by dissocition of the H-aggregate in hemicyanine LB multilayers.

Key words: Langmuir-Blodgett multilayer, Polarzed UV-visible absorption, Anisotropy, Hemicyanine