Antiferroelectric Bent-Core Liquid Crystals for Molecular Switching Applications

被引：12
|
作者：
Balamurugan, S. [1 ]
Kannan, P. [1 ]
Chuang, M. T. [2 ]
Wu, S. L. [2 ]
机构：
[1] Anna Univ, Dept Chem, Madras 600025, Tamil Nadu, India
[2] Tatung Univ, Dept Chem Engn, Taipei 104, Taiwan
来源：
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2010年 / 49卷 / 16期
关键词：
BEHAVIOR; PHASE; MESOPHASES; DESIGN; FIELD;
D O I：
10.1021/ie100019p
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
A homologous series of unsymmetrical bent-core (BC) liquid crystalline (LC) molecules were synthesized and characterized. Structural effects on mesomorphic and physiochemical properties were investigated in terms of variation in one terminal chain length with respect to constant at another terminal. The synthesis and characterization of new bent-core mesogens were exhibiting antiferroelectric switchable columnar phases. The homologues with short methylene chains (8a and 8b) and longer methylene chain (8d-8g) molecules exhibited switchable B-2 mesophase and nonswitchable rectangular columnar B, phase obtained for phase middle homologue (8c). The spacer effect was observed in forming B2 phase with various lengths of spacers. Spontaneous polarization was measured and maximum of 535 nC/cm(-1) observed for longer methylene chain containing compound (8g).
引用
收藏
页码：7121 / 7128
页数：8
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