首页> 外文期刊>Molecular Crystals and Liquid Crystals Science and Technology, Section A. Molecular Crystals and Liquid Crystals >A Study on Pretilt Angle of Liquid Crystal with Polarized UV Light Irradiation on Soluble Polyimide Alignment Films
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A Study on Pretilt Angle of Liquid Crystal with Polarized UV Light Irradiation on Soluble Polyimide Alignment Films

机译:偏振态紫外光在可溶性聚酰亚胺取向膜上的液晶预倾角研究

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摘要

We prepared photo-crosslinkable polyimide (PI)film, which contains CF_3 moiety. The ketone peak (at1678cm~(-1)) of PI was decreased and broad hydroxyl bondappeared. The decrease of ketone peak was also confirmed withUV-visible spectroscopy. The dichroic ratio of LC cell wasobtained. The LC molecules are uniformly aligned perpendicularto polarization direction of irradiated light on PI layers. Thepretilt angle of LC on alignment PI films was obtained to be about 3.3deg.
机译:我们制备了包含CF_3部分的可光交联的聚酰亚胺(PI)膜。 PI的酮峰(在1678cm〜(-1)处)降低,并出现了广泛的羟基键。紫外-可见光谱也证实了酮峰的减少。获得LC细胞的二向色比。 LC分子垂直于PI层上的照射光的偏振方向均匀地排列。 LC在取向PI膜上的预倾角约为3.3度。

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