SYNTHESIS AND CHARACTERIZATION OF PHENYL ACETYLENE DERIVATIVES INCORPORATING A PERFLUOROALKYL GROUP, AND THE APPLICATION TO ELECTRONIC MATERIALS

本项目旨在开发具有全氟烷基链和三键的新型液晶材料，表征液晶相，以及液晶材料的光反应。此外，我们还对这些液晶材料在有机溶剂中形成的聚集体进行了研究，成功制备了10种新型液晶，并用小角X射线衍射方法表征了近晶相的层状结构，发现全氟烷基链之间的亲氟相互作用在决定近晶相的热性质和分子排列中起着主导作用A相和B相。虽然在各种条件下考察了含双键液晶的光反应，但在本工作中所考察的材料非常稳定，没有产生任何反应产物。聚集体的大小取决于制备的条件，并且聚集体的大小被确定为约100 μ m。0.5在有机溶剂中为-1.0 UNFm。有趣的是，即使液晶的浓度小于10摩尔%，颗粒也显示出液晶性质。

This project aimed to develop new liquid crystal materials incorporationg a perfuloroalkyl chain and a triple bond, characterization of the liquid crystal phases, and also photo reaction of the liquid crystal materials. In addition, we also aimed to investigate the aggregates formed by these liquid crystal materials in organic solvents.We successfully prepared 10 kinds of new liquid crystals, and characterized the layer structure of smectic phases by a small angle X-ray diffraction method, and found that the fluorophilic interaction between the perfuloroalkyl chains plays a predominat role in determining the thermal properties and the molecular arrangement in the smectic A, and B phases. Although the photo reaction of the liquid crystals incorporating a **ple bond was examined by various conditions, the materials examined in this work were very stable and did not give any reaction products.The liquid crystal materials prepared in this work were clarified to give aggregates in organic solvents. The size of the aggregates are dependent on the condition of the preparation, and the size of the aggregates was determined to be ca. 0.5 -1.0μm in organic solvents. Interstingly, the particles reveal liquid crystal properties, even if the concentration of liquid crystals is less than 10 mol%.