Synthesis of Schiff Base-type Liquid Crystalline Crown Ethers Containing Dibenzo-18-Crown-6 Unit  

作　　者：张淑媛 何可可 郑世军 唐斯甫 张晓静 李自法 

机构地区：[1]Department of Chemistry, Zhengzhou University [2]College of Materials Engineering, Zhengzhou University

出　　处：《Chinese Journal of Chemistry》2004年第4期395-399,共5页中国化学（英文版）

基　　金：theNationalNaturalScienceFoundationofChina(No.29974026);theNaturalScienceFoundationofHenanProvince(No.0211021100)andtheNaturalScienceFoundationofEducationalDepartmentofHenanProvince(No.20021500004).

摘　　要：The synthesis and characterization of novel Schiff base liquid crystalline crown ethers prepared from the inter-mediates 4-(4-alkoxylbiphenyl-4-carbonyl)benzaldehyde, cis- and trans-4,4-diaminodibenzo-18-crown-6 are de-scribed. The structure of these compounds have been well characterized by elemental analysis, IR, 1H NMR and MS spectroscopy. The liquid-crystalline behavior of these compounds was also inverstigated by differential scanning calorimetry (DSC), polarizing optical microscopy (POM) with a heating stage and polarimetric analysis.The synthesis and characterization of novel Schiff base liquid crystalline crown ethers prepared from the inter-mediates 4-(4-alkoxylbiphenyl-4-carbonyl)benzaldehyde, cis- and trans-4,4-diaminodibenzo-18-crown-6 are de-scribed. The structure of these compounds have been well characterized by elemental analysis, IR, 1H NMR and MS spectroscopy. The liquid-crystalline behavior of these compounds was also inverstigated by differential scanning calorimetry (DSC), polarizing optical microscopy (POM) with a heating stage and polarimetric analysis.

关 键 词：Schiff base liquid crystalline crown ether thermotropic liquid crystal phase transition 

分 类 号：O753.2[理学—晶体学]