Room-Temperature Discotic Nematic Liquid Crystals over a Wide Temperature Range: Alkali-Metal-Ion-Induced Phase Transition from Discotic Nematic to Columnar Phases
作者:Shigeo Kohmoto、Emiko Mori、Keiki Kishikawa
DOI:10.1021/ja073962f
日期:2007.11.1
Triphenylene derivatives possessing poly(ethylene oxide) (PEO) units exhibited discotic nematic (ND) phases at room temperature. Unique phase transition from a ND phase to a hexagonal columnar (Colh) phase was triggered by the addition of alkali metal salts. This phase transition was dependent on the type of the counterion of alkali metal salts added.
具有聚(环氧乙烷)(PEO)单元的苯并苯衍生物在室温下表现出盘状向列(ND)相。通过添加碱金属盐引发从 ND 相到六方柱状 (Colh) 相的独特相变。这种相变取决于添加的碱金属盐的抗衡离子类型。