Mesomorphic behavior of new azomethine liquid crystals having terminal iodo group  

作　　者：Sie-Tiong Ha Teck-Leong Lee Guan-Yeow Yeap Masato M.Ito Ayumu Saito Masaaki Watanabe 

机构地区：[1]Department of Chemical Science,Faculty of Science,Universiti Tunku Abdul Rahman,Jln Universiti,Bandar Barat,31900 Kampar,Perak,Malaysia [2]Liquid Crystal Research Laboratory,School of Chemical Sciences,Universiti Sains Malaysia,11800 Minden,Penang,Malaysia [3]Faculty of Engineering,Soka University,1-236 Tangi-cho,Hachioji,Tokyo 192-8577,Japan

出　　处：《Chinese Chemical Letters》2011年第3期260-263,共4页中国化学快报（英文版）

基　　金：Universiti Tunku Abdul Rahman for the research facilities and financial support; Ministry of Higher Education for the award of MOHE Scholarship

摘　　要：A series of azomethine esters,3-hydroxy-4-{[（4-iodophenyl）imino]methyl}phenyl alkanoates possessing even number of carbon atoms at the terminal alkanoyloxy chain（C_（n-1）H_（2n-1）COO-,n = 4,6,8,10,12,14） was synthesized.n-Butanoyloxy was found non-mesogenic,whilst n-hexanoyloxy to n-tetradecanoyloxy exhibited enantiotropic smectic A phase with fan-shaped texture.It was found that the length of terminal alkanoyloxy chain influenced the mesomorphic properties.A series of azomethine esters,3-hydroxy-4-{[（4-iodophenyl）imino]methyl}phenyl alkanoates possessing even number of carbon atoms at the terminal alkanoyloxy chain（C_（n-1）H_（2n-1）COO-,n = 4,6,8,10,12,14） was synthesized.n-Butanoyloxy was found non-mesogenic,whilst n-hexanoyloxy to n-tetradecanoyloxy exhibited enantiotropic smectic A phase with fan-shaped texture.It was found that the length of terminal alkanoyloxy chain influenced the mesomorphic properties.

关 键 词：Liquid crystals Azomethine ester ENANTIOTROPIC Smectic A 

分 类 号：O753.2[理学—晶体学] TN873.93[电子电信—信息与通信工程]