Utilization of the Perfluoroarene-Arene Interaction for Stabilization of Liquid Crystal Phases

作者：Kishikawa Keiki^*

来源：Israel Journal of Chemistry, 2012, 52(10): 800-808.

DOI：10.1002/ijch.201200028

• aggregation
• liquid crystals
• perfluoroarene-arene interactions
• supramolecular chemistry

Utilization of the perfluoroarene-arene interaction for stabilization of liquid crystal phases is reviewed. This interaction is strong (3.7-5.6 kcal/mol), but it is difficult to generate stable liquid crystal phases by using it. From the examples in this review, it is strongly suggested that flatness of the mesogenic units is important for obtaining stable liquid crystal phases. Introduction of a perfluorinated benzene ring to a rodlike molecule is effective in generating local biaxiality in the nematic and smectic A phases. Furthermore, the absence of an odd-even effect and the presence of a %26quot;trans-gauche-gauche%26quot; effect in the liquid crystal phases of monoalkylated rodlike molecules possessing a pentafluorophenyl group are explained by suppression of the molecular spin movements.

• 出版日期2012-10