Rod-like Schiff Base Magnetic Liquid Crystals Bearing Organic Radical

• 来源期刊: 中国化学（英文版）
• 年，卷（期）: 2006,（12）
• 页码范围: 1754-1757
• 页数: 4页
• 语种: 英文

摘要

4 novel rod-like Schiff base magnetic liquid crystals have been prepared in which trans-bicyclohexyl or trans-cyclohexyl phenyl and biphenyl carboxylic acid phenol ester mesogenic cores with n-propyl and n-pentyl substituents were terminated by 4-amino-TEMPO (TEMPO=2,2,6,6-tetramethylpiperidine-l-oxyl). Of these compounds the silk-like and schlieren textures were found from 4c and 4d by POM (Polarizing Optical Microscope).DSC (Differential Scanning Calorimeter) measurements show that the mesophase exists from 4-6 ℃. EPR spectra reveal their paramagnetic properties.