Synthesis of Fluoride Bis- diphenyl Acetylene Liquid Crystal and the Liquid Crystal Property
Fan Chengshi;Luo Zhonglin;Liu Kegang;Wen Jianxun;Shanghai Wentian Chemical Co.,Ltd;Intensive Care Unit, University Hospital Basel;
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.