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Development and Application of Novel Polymer Liquid Crystal with Erasable Display Function

具有可擦除显示功能的新型聚合物液晶的研制与应用

基本信息

批准号：
07454189
负责人：
TAKENAKA Sunsuke
金额：
$ 3.97万
依托单位：
Yamaguchi University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
1995
资助国家：
日本
起止时间：
1995 至 1997
项目状态：
已结题

项目摘要

In this project, I am interested in the development and application of novel polymer liquid crystals with erasable display function. Firstly, novel polyarylates having 4-cyanophenyl and 4-alkoxyphenyl 4- (4-alkoxybenzoyloxy) benzoates at the side chain where the liquid crystal core binds at the ortho position of the terminal aromatic ring with the spacer, were prepared. These materials show a nematic phase, and the cyano derivatives show a good right-valve function in the nematic phase with a memory function. Secondly, polyacrylates having 4-cyanophenyl 4- (4-alkoxybenzoyloxy) -benzoates at the side chain, where the liquid crystal core binds at meta position of the terminal aromatic ring with the spacer group were prepared. The derivatives tend to show smectic A phase, and are inadequate to apply to display devices. Thirdly, some new acrylate polymers having 4- (4-alkoxyphenoxycarbonyl) phenyl 4-cyanobenzoates at the side chain, where the liquid crystal core binds at the meta position … More of the terminal aromatic ring with the spacer group, were prepared. These polymers tend to show a smectic C phase, and the nemtic phase is formed only some members with a short alkoxy chain. The smectic materials were impossible to apply to the display device, because the alignment of the liquid crystal core in the glass substrate was very difficult. Forthly, novel polysiloxanes with a liquid crystal core at the side chain were prepared. The perfluoro derivatives were confirmed to form a very stable monolayr on the boundary between water and organic solvent, and the monolayr was easily accumulated on the glass surface, giving a LB film. The LB film is applicable to the alignment layr of liquid crystals in the liquid crystal cell.Finally, 4,4'-bis (4-propenyloxybenzoyloxy) biphenyl was prepared, and the thermal properties were eexamined. The material shows a nematic and smectic C phase. The material easily polymerize in the nematic and smectic C phase with keeping the molecular alignment. This material was found to apply to the alignment layr of the liquid crystals. Less

在这个项目中，我对具有可擦除显示功能的新型聚合物液晶的开发和应用感兴趣。首先，制备了在侧链上具有4-氰基苯基和4-（4-烷氧基苯甲酰氧基）苯甲酸4-烷氧基苯基酯的新型聚芳酯，其中液晶核在末端芳环的邻位与间隔基结合。这些材料显示出一个α相，并且氰基衍生物在α相中显示出良好的右阀功能，具有记忆功能。其次，制备了侧链上具有4-（4-烷氧基苯甲酰氧基）-苯甲酸4-氰基苯基酯的聚丙烯酸酯，其中液晶核在末端芳环的Meta位与间隔基团结合。衍生物倾向于显示近晶A相，并且不足以应用于显示器件。第三，一些新的丙烯酸酯聚合物，其侧链含有4-（4-烷氧基苯氧基羰基）苯基4-氰基苯甲酸酯，其中液晶核在Meta位结合 ...更多信息的末端芳环与间隔基团，制备。这些聚合物倾向于显示近晶C相，并且向列相仅由具有短烷氧基链的一些成员形成。近晶材料不可能应用于显示器件，因为液晶芯在玻璃基板中的对准非常困难。第四，合成了侧链含液晶核的新型聚硅氧烷。结果表明，全氟衍生物在水和有机溶剂的界面上形成了非常稳定的单分子膜，并且该单分子膜很容易在玻璃表面聚集，形成LB膜。LB膜适用于液晶盒中液晶的取向层。最后合成了4，4 ′-双（4-丙烯氧基苯甲酰氧基）联苯，并对其热性能进行了测试。该材料显示出近晶C相和非晶C相。该材料在保持分子排列的同时，易于在近晶C相和非晶C相中发生相变。发现该材料适用于液晶的取向层。少