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Citation: Xu Yong-Sheng, Han Kui, Xu Jian-Hua, Zhou Guang-Peng, Lu Xing-Ze. Studies on Azimuthal Orientation of Hemicyanine Molecules in LB Films[J]. Acta Physico-Chimica Sinica, ;1996, 12(09): 836-840. doi: 10.3866/PKU.WHXB19960912 shu

Studies on Azimuthal Orientation of Hemicyanine Molecules in LB Films

1.
Department of Physics,Fudan University,Shanghai 200433

Received Date: 26 January 1996
Available Online: 15 September 1996

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.
- Langmuir-Blodgett multilayer,
- Polarzed UV-visible absorption,
- Anisotropy,
- Hemicyanine
  ,
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