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含氧亚甲基联苯液晶的合成及介晶性
引用本文:李辉容,胡平,汪必琴,赵可清.含氧亚甲基联苯液晶的合成及介晶性[J].四川师范大学学报(自然科学版),2007,30(2):223-227.
作者姓名:李辉容  胡平  汪必琴  赵可清
作者单位:四川师范大学,化学与材料学院,四川,成都,610066;四川师范大学,化学与材料学院,四川,成都,610066;四川师范大学,化学与材料学院,四川,成都,610066;四川师范大学,化学与材料学院,四川,成都,610066
基金项目:国家自然科学基金;四川省青年基金
摘    要:报道了3个系列含氧亚甲基酯的化合物:H2n+1CnOC6H4C6H4OCH2C6H4CO2-CmH1m+1(系列A),H2m+1Cm-O2 CC6H4CH2-OC6H4C6H4O-CH2C6H4CO2-CmH2m+1(系列B),H2m+1Cm-O2CC6H4CH2-OC6H4O-CH2C6-H4CO2-CmH2m+1(系列C),n=8,12,16;m=6,12,14,16.通过差示扫描量热法(DSC)和偏光显微镜(POM)对其介晶性研究发现,除化合物C-14和C-16外,这些化合物都具有介晶性.m相同时,系列B化合物比相对应的系列A化合物有更高的清亮点;系列B化合物比系列C有更高清亮点和更宽的介晶相温度范围.

关 键 词:联苯  棒状液晶  近晶C相  六方近晶相
文章编号:1001-8395(2007)02-0223-05
收稿时间:2005-11-15
修稿时间:2005年11月15

Synthesis and Mesomorphism of Biphenyl Liquid Crystals with CH2O Radical
LI Hui-rong,HU Ping,WANG Bi-qin,ZHAO Ke-qing.Synthesis and Mesomorphism of Biphenyl Liquid Crystals with CH2O Radical[J].Journal of Sichuan Normal University(Natural Science),2007,30(2):223-227.
Authors:LI Hui-rong  HU Ping  WANG Bi-qin  ZHAO Ke-qing
Institution:College of Chemistry and Materials, Sichuan Normal University, Chengdu 610066, Sichuan
Abstract:Three series of liquid crystals with CH2O and COO linkages of H2n+1CnOC6H4C6H4-OCH2C6H4CO2-CmH2m+1(series A),H2m+1Cm-O2CC6H4CH2-OC6H4C6H4O-CH2C6H4CO2-CmH2m+1(series B) and H2m+1Cm-O2CC6H4CH2-OC6H4O-CH2C6H4CO2-CmH2m+1(series C) are prepared,n=8,12,and 16,m=6,12,14,and 16.They are synthesized and their mesomorphous behaviors are studied through differential scanning calorimetry(DSC) and polaritized optical microscopy(POM).The result shows that molecules lead mesomorphous properties except for compounds C-14 and C-16,It is detected that monosubstituted compounds have lower mesomorphous stability than their disubtituted counterparts.The molecules with biphenyl cores have higher clearing point and wider mesophases than their counterparts with phenyl cores.
Keywords:Biphenyl  Rod-like liquid crystal  Smectic C  Hexagonal smectic
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