具有高自发极化的铁电液晶

IF 0.6 4区化学 Q4 CHEMISTRY, MULTIDISCIPLINARY

Chemicke Listy Pub Date : 2011-08-23 DOI:10.5772/19355

S. Pirkl, M. Glogarová

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引用次数: 14

摘要

讨论了化学结构对铁电手性半晶C中相自发极化的影响。结果表明，不对称性、极性基团在手性中心的存在、取代、分子中心骨架中杂环的存在以及分子内旋转的阻碍是影响Ps大小的最重要因素。我们对60多个化合物进行了调查，其中包括自发极化大于400nc cm−2的化合物。

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Ferroelectric Liquid Crystals with High Spontaneous Polarization

The influence of chemical structure on spontaneous polarization, Ps, of a ferroelectric chiral smectic C meso¬phase is discussed. It is shown that the asymmetry, the presence of polar groups in the chiral centre, substitution, the presence of heterocycles in the central skeleton of the molecule and the hindrance of intramolecular rotations are the most important factors for the magnitude of the Ps. A survey of more than 60 compounds is presented including those with spontaneous polarization above 400 nC cm−2.

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来源期刊

Chemicke Listy 化学-化学综合

CiteScore

0.90

自引率

66.70%

发文量

审稿时长

3-6 weeks

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