Synthesis and mesomorphic properities of some ferroelectric liquid crystals of lactate

• 来源期刊: 中国化学(英文版)
• 年，卷（期）: 2000,（6）
• 所属期刊栏目: Articles
• 页码范围: 900-909
• 页数: 10页
• 语种: 英文

摘要

A semiperfluorinated chain has been introduced into three series of lactate-based molecules, and their mesomorphic properities have been studied by DSC and optical polarized microscope. An abnormal phenomenon has been found that the introduction of a triple bond in the core of the molecule,which lengthened the molecule, gave rise to a decrease in the thermal stability of chiral smectic C phase and smectic A phase. 2, 3-Difiuoro substituents of the phenylenic structure hinder the formation of the chiral smectic C phase because of the steric effect.