【摘要】 合成了一种新型含端烯基芳羧酸脂类液晶冠醚;对其结构进行了 IR、UV、~1H NMR、MS等波谱分析,所取得的分析数据与预期结构相符.将液晶冠醚单体和硅氢加成,合成了相应的聚硅氧烷侧链液晶冠醚.分别测定了单体和聚合物的液晶性质和热性质.并首次将其聚合物应用于气相色谱固定液,显示出集高分子液晶和高分子冠醚于一体的双重色谱性能.是一类很有发展前景的新型色谱固定液.更多还原

【Abstract】 A new liquid crystal crown ether-4 (ω-allyl-yloxy)-4’-(4’-Carboxybenzo 15-Crown- 5) biphenyl was synthesized,its structure was determined by IR,UV,~1H NMR,MS spectroscopy. The monomer of crown ether and its polymer characterized by differential scannig calorimeter (DSC) and hot-stage light-polarized microscope.The polymer was prepared by a hydrosilylation reaction between poly (methylhydrosiloxane) and 4 (ω-allyl-yloxy)-4’-(4’ carboxybenzo-15-crown-5) biphenyl.In this paper,we are first reporte side-China liquid Crystalline polysiloxane containing crown ether used as stationary phase for capillary gas chromatography.The capillary column can be easily coated with this stationary phase and exhibits high efficiency,and unique selectivity for positional isomers.This stationary phase possesses the behaviors of both liquid crystalline siloxane and poly (crown ether) siloxane.更多还原