二氟亚甲氧基苯类液晶的合成与低温性能

摘要

Four double-ring difluorometheneoxy-bridged benzene compounds were synthesized and characterized by means of IR,1H NMR,13C NMR,19F NMR and MS.Their viscosities at different temperatures were also measured and analyzed by using liquid dynamic rheometer.It was found that these compounds not only have super low viscosity and small temperature-dependent viscosity,but also can be used as the sotvent of LC to replace ester components.They may be used as the LC solvent to improve the low-temperature response speed of LCD.%合成了4个二氟亚甲氧基苯类液晶化合物,经过IR、1 H NMR、13C NMR、19F NMR和MS谱图表明分子结构正确;并用动态流变仪测试分析了不同温度下的粘度,发现这些液晶不仅粘度低、对温度的依赖小,而且可以用作替代酯类的液晶溶剂.如果用于液晶溶剂可以提高液晶器件的低温响应速度.