含氟双二苯乙炔液晶的合成及液晶性

Synthesis of Fluoride Bis- diphenyl Acetylene Liquid Crystal and the Liquid Crystal Property

为开发光子学领域的器件所需要的低黏度及双折射大的混合液晶材料,笔者设计及完成适于工业化的一系列新型含氟双二苯乙炔类液晶的合成。利用有加热台光学显微镜及差示扫描量热法(DSC)研究表明,所列含氟双二苯乙炔液晶都是向列相液晶,单个2,3,5,6-四氟亚苯基有利于向列相的形成,不仅具有高清亮点,还具有宽的液晶温度区间。介绍了含氟双二苯乙炔液晶的合成方法以及结构与液晶性的相关性,此类液晶非常适于制备稳定的液晶混合物。

The author designed and completed the synthesis of a series of new type fluoride bis-diphenyl acetylene which was suitable for industrialized, the low viscosity and birefringence mixed liquid crystal materials development needed in photonics field. The studies using heating optical microscope and differential scanning calorimetry(DSC) showed that the fluoride bis-dipheyl acetylene liquid crystal was nematic phase, single 2,3,5,6- tetrafluorophenylene was beneficial to the nematic phase formation, not only had high definition highlights, but also had wide liquid crystal temperature range. Introduced the synthesis methods of fluoride bis-dipheyl acetylene liquid crystal and the correlation of structures and liquid crystal property, the liquid crystal is very suitable for stable mixed liquid crystal preparation.