制备并表征了新的以3,4'-联苯撑部分为中心核并具有全酯和偶氮酯侧向结构的弯曲核一甲基丙烯酸甲酯及其侧链聚合物。据报道,关于在中间相中原位聚合或在溶液中通过ATRP合成的,很少研究的侧链均聚物和共聚物的结果颇具吸引力。研究集中在这些材料的合成以及结构变化(例如芳环数(5或6),– N N–的存在与横向结构上的–COO–链接以及反应性基团的相对位置,对这些新型弯曲核基材料的液晶性能都有影响。POM,XRD,DSC和电光研究已表征了这些低分子和高分子化合物的介晶行为,以及具有大体积末端溴取代基的合成中间体的介晶行为,表明这些新分子中的大多数具有组织形成非经典的层状或柱状中间相。与单体相比,通过聚合可以实现层状SmCP中间相范围的显着稳定,有趣的是,这些超分子结构的玻璃化发生在室温下。
The invention relates to novel photochromic liquid crystal materials which may be used in various electro-optic devices including liquid crystal devices. The materials can be converted into another form on irradiation by light which may make it feasible for them to be addressed by light in electro-optic devices. The materials are based on 5-membered heterocycles.
[EN] POTOCHROMIC LIQUID CRYSTALS<br/>[FR] MATIERES PHOTOCHROMIQUES A CRISTAUX LIQUIDES
申请人:QINETIQ LTD
公开号:WO2004003107A1
公开(公告)日:2004-01-08
The invention relates to novel photochromic liquid crystal materials which may be used in various electro-optic devices including liquid crystal devices. The materials can be converted into another form on irradiation by light which may make it feasible for them to be addressed by light in electro-optic devices. The materials are based on 5-membered heterocycles.