LOW MOLAR MASS LIQUID-CRYSTALLINE GLASSES - PREPARATION AND PROPERTIES OF THE ALPHA-(4-CYANOBIPHENYL-4'-OXY)-OMEGA-(1-PYRENIMINEBENZYLIDENE-4'-OXY)ALKANES
LOW MOLAR MASS LIQUID-CRYSTALLINE GLASSES - PREPARATION AND PROPERTIES OF THE ALPHA-(4-CYANOBIPHENYL-4'-OXY)-OMEGA-(1-PYRENIMINEBENZYLIDENE-4'-OXY)ALKANES
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DOI：
10.1021/cm00024a025
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发表时间：
1992-11-01
影响因子：
8.6
通讯作者：
KARASZ, FE
中科院分区：
文献类型：
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作者：
ATTARD, GS;IMRIE, CT;KARASZ, FE
合成了十个不对称二聚体同系物系列alpha-(4-cyanobiphenyl-4‘-oxy)-omega-(1-pyren-iminebenzylidene-4’-oxy)alkanes，并表征了它们的介晶性质。所有同系物都表现出玻璃化行为，在室温以上形成向列相或近晶玻璃。详细讨论了该系列的热行为，并与相关的α，omega-bis(1-pyreniminebenzylidene-4‘-oxy)alkanes和α，欧米伽-双(4-氰基二苯基-4’-氧基)烷烃二聚体系列的过渡性质进行了比较。根据分子形状各向异性的变化解释了这些系列之间的差异。简要讨论了这些新材料的应用潜力。
Ten members of the asymmetric dimer homologous series alpha-(4-cyanobiphenyl-4'-oxy)-omega-(1-pyren-iminebenzylidene-4'-oxy)alkanes have been synthesized, and their mesogenic properties characterized. All the homologues exhibit glassy behavior, forming either nematic or smectic glasses, above room temperature. The thermal behavior of this series is discussed in detail, and the transitional properties of the homologues are compared to those of the related alpha,omega-bis(1-pyreniminebenzylidene-4'-oxy)alkanes and alpha,omega-bis(4-cyanobiphenyl-4'-oxy)alkanes dimer series. The differences between these series are interpreted in terms of changes in the anisometry of the molecular shape. The application potential of these novel materials is discussed briefly.