Liquid-crystalline heterocyclic phthalocyanine analogues based on thiophene

被引：40

作者：

Knawby, DM ^{[1
]}

Swager, TM ^{[1
]}

机构：

[1] UNIV PENN,DEPT CHEM,PHILADELPHIA,PA 19104

来源：

CHEMISTRY OF MATERIALS | 1997年 / 9卷 / 02期

关键词：

D O I：

10.1021/cm960368o

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The syntheses and mesomorphism of novel octaalkoxymethyl-substituted tetra-2,3-thiophenophorphyrazines, heterocyclic phthalocyanine analogues in which the benzene rings are replaced by thiophene rings, are reported. NMR analysis indicates that these materials exist as isomeric mixtures due to the asymmetry induced by the thiophene ring. Among the attractive features of liquid-crystalline 2,3-thiophenophorphyrazines over phthalocyanines are their lower mesomorphic and isotropic temperatures. These features have resulted in liquid crystallinity at room temperature. Similar to liquid-crystalline phthalocyanine derivatives, metalation with copper raises the transition temperatures.

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页码：535 / 538

页数：4

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