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三聚磷腈咪唑盐离子液晶的合成及其性能研究 被引量:1

Synthesis and mesomorphism of novel cyclotriphosphazene-tethered imidazolium ionic liquid crystals
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摘要 通过咪唑介晶单元与三聚磷腈单元间的季铵化作用合成了一类新型三聚磷腈咪唑盐,采用偏光显微镜(POM)、差热分析(DSC)等方法对这类物质的液晶性能进行了研究,结果表明:化合物的液晶相态取决于咪唑介晶单元所含烷基链的数目.由含单烷基链的咪唑介晶单元生成的三聚磷腈咪唑盐呈现层列相;而由含三烷基链的咪唑介晶单元生成的三聚磷腈咪唑盐呈现柱相. Novel cyclotriphosphazene-tethered imidazolium salts were synthesized by quaternization of polycatenar imidazole mesogenic units which containing extended aromatic core,with hexakis-(4-chloromethylphenoxy)triazatriphosphinine.The mesophase behavior of such compounds was investigated.Imidazole mesogenic unit containing only one terminal chain gives rise to Smectic phases.While mesogenic unit containing three long terminal chains exhibits columnar mesophase.
出处 《云南大学学报(自然科学版)》 CAS CSCD 北大核心 2009年第6期625-628,F0002,共5页 Journal of Yunnan University(Natural Sciences Edition)
基金 国家教委博士点基金资助项目(2007067300) 云南省自然科学基金资助项目(2005E008M)
关键词 咪唑 三聚磷腈 离子液晶 imidazolium cyclotriphosphazene liquid crystals
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