摘要
向列相型混合液晶的骨架配方之一的烷基氟苯类液晶化合物具有优异的性能。采用重氮化法合成了4-（反-4-正戊基环己基）氟苯类液晶化合物，并考察了盐酸用量对反应的影响，确定盐酸与原料的物质的量投料比为2，气相色谱测定含量〉99％，总收率81．5％，该路线适用于制备一系列不同烷基氟取代的衍生物，目标化合物经。H—NMR、IR进行了结构鉴定，表明是所设计合成的化合物，并通过差示扫描量热法（DSC）对其相变行为进行了测试，且结果表明相变温度在25．4—42．5℃。
The alkyl fluorobenzene crystal compound has excellent performances which is one of the formula of nematie mixing crystal framework. The 4-（trans-4-n-pentyl cyclohexyl） fluorobenzene liquid crystal compound is synthesized by diazotization method. The effect of HC1 amount on the reaction was investigated, and the molar ratio of raw materials is 2, the purity of title compound is more than 99% determined by gas chromatography, the total yield was 81.5%. This route is suitable to prepare a series of various fluorine-substituted alkyl derivatives. The title compound is characterized by 1H-NMR and IR, and its phase transition behavior is tested by differential scanning calorimetry （DSC）, the results show that the phase transition temperature is between 25.4-42.5℃.
出处
《化学与粘合》
CAS
2014年第1期40-42,共3页
Chemistry and Adhesion
基金
黑龙江省科学院春苗资助专项
关键词
液晶
含氟
相变
Liquid crystal
fluorine contained
phase transition
