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Photoalignment Mechanism of Liquid Crystals on Poly(vinyl cinnamate) Surfaces

 

作者: EungJin Kim,   O.Ok Park,   LiHai Feng,   Yukio Kawanami,   Hirokazu Furue,   Shunsuke Kobayashi,  

 

期刊: Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals  （Taylor Available online 1998）
卷期: Volume 317, issue 1  

页码: 245-258

 

ISSN:1058-725X

 

年代: 1998

 

DOI:10.1080/10587259808047119

 

出版商: Taylor & Francis Group

 

关键词: Photoalignment;poly(vinyl cinnamate);mechanism;liquid crystal;hydrogenation

 

数据来源: Taylor

 

摘要:

Surface hydrogenation reaction was performed in order to clarify the mechanism of photoalignment using poly(vinyl cinnamate) (PVCi). The reaction makes it possible to remove any surface ordering of the cinnamate side groups, which may happen during the photoalignment process while the generated photoproducts are still intact. After considering LC alignment and the azimuthal anchoring energy of the hydrogenated PVCi/E7 cells, it was confirmed that the alignment of liquid crystal molecules is mainly induced by the photoproducts.

 

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