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首页> 外文期刊>Molecular Crystals and Liquid Crystals Science and Technology, Section A. Molecular Crystals and Liquid Crystals >Liquid Crystallinity of Non-Symmetrical Dimeric Compounds (I) Synthesis of 4-(4'-Benzyloxy)Biphenyl Cholesteryl Alkanedioates and their Phase Transition Behavior
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Liquid Crystallinity of Non-Symmetrical Dimeric Compounds (I) Synthesis of 4-(4'-Benzyloxy)Biphenyl Cholesteryl Alkanedioates and their Phase Transition Behavior

机译：非对称二聚体化合物的液晶性（I）4-（4'-苄氧基）联苯胆固醇烷基烷二酸酯的合成及其相变行为

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摘要

A new series of non-symmetrical dimeric compounds containing two distinct mesogenic groups, 4-(4'-benzyloxy)biphenyl cholesteryl alkanedioates, was prepared in our laboratory. In addition, two symmetrical dimmers, dichoresteryl decanedioate and di(4-(4'-benzyloxy)biphenyl) decanedioate, were synthesized. The phase transition behavior of these compounds has been studied by a differential scanning calorimeter and a polarizing microscope. In the case of the symmetrical dimmers, dichoresteryl decanedioate gave rise to a monotropic cholesteric phase and di(4-(4'-benzyloxy)biphenyl) cholesteryl decanedioate which is the non-symmetrical dimmer gave rise to three liquid crystalline phases in wide temperature range. Moreover, a typical even-odd effect with regarded to the phase transition behavior was observed for the non-symmetrical dimeric compounds.
机译：在我们的实验室中制备了一系列新的非对称二聚化合物，它们包含两个不同的介晶基团，即4-（4'-苄氧基）联苯胆固醇酯基链烷二酸酯。另外，合成了两个对称的二聚体，癸二酸酯二癸酸酯和癸二酸酯二（4-（4'-苄氧基）联苯）。这些化合物的相变行为已通过差示扫描量热仪和偏光显微镜进行了研究。在对称二聚体的情况下，癸二酸酯二癸酸酯产生单向胆甾相，非对称二聚体二（4-（4'-苄氧基）联苯）胆甾酸酯二（4-（4'-苄氧基）联苯）胆甾酸酯在宽温度范围内产生三个液晶相。 。此外，对于非对称二聚化合物，在相变行为方面观察到典型的偶数效应。

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