对氟肉桂酸丙烯醇酯接枝聚硅氧烷的光致取向研究

Photoalignment investigation of polysiloxane allyl p-flour cinnamate

采用一种简单的方法合成了一种新型的光致取向材料—对氟肉桂酸丙烯醇酯接枝聚硅氧烷 ,通过线性偏振光聚合(LPP)的方法制备了取向良好的液晶取向膜并研究了膜厚度、液晶材料、烘烤温度和时间、曝光强度和时间对取向的影响 。

A novel photosensitive alignment material -polysiloxane allyl p flour cinnamate was synthesized and used in fabricating LC cells by sandwiching nematic LC molecules between two indium tin oxide (ITO) patterned substrates. The LC aligning ability of this kind of alignment layers, fabricated by linearly polarized UV induced polymerization (LPP), was characterized by polarizing microscope and conoscopic observation. Influence of the thickness of LPP films, LC materials, baking conditions and exposure conditions to the alignment and thermal stability were discussed in details. The results confirmed that the photoalignment films exhibited not only good aligning ability but also excellent thermal stability.