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Citation: PENG Zeng-Hui, YU Tao, XUAN Li. Preparation of Photoalignment Film of Liquid Crystals from Photosensitive Polyester[J]. Chinese Journal of Applied Chemistry, ;2005, 22(3): 264-267. shu

Preparation of Photoalignment Film of Liquid Crystals from Photosensitive Polyester

1.
State Key Laboratory of Appmied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Science, Changchun 130033

Corresponding author: XUAN Li,
Received Date: 2 May 2004
Available Online: 25 August 2004
Fund Project: 吉林省科委基金(20010579,20020603)资助项目 (20010579,20020603)

A linear photosensitive polyester was synthesized from p-phenylenediacrylic dichloride and 4,4'-(hexafluoroisopropylidene) diphenol,and the photoalignment films of nematic liquid crystals were prepared by using the polyester.The film became anisotropic after being irradiated by linear polarized UV,and the reaction mechanisms were investigated by UV-Vis and IR.A parallel liquid crystal cell was fabricated with the photoalignment film.Polarized optical microscopy indicates that the alignment of liquid crystals is uniform and stable.The pretilt angle of the photoalignment film is 2°~3°,and the alignment could be maintained at up to 130℃.
- linear polyester,
- liquid crystal,
- photoalignment,
- photosensitive polymer
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