The Physical Properties of A Series of Antiferroelectric Hetrocyclic Esters
The Physical Properties of A Series of Antiferroelectric Hetrocyclic Esters
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DOI：
10.1080/10587259708039418
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发表时间：
1997-09
影响因子：
0.7
通讯作者：
J. T. Mills;Richard M. Miller;H. Gleeson;A. Seed;M. Hird;P. Styring
中科院分区：
文献类型：
--
作者：
J. T. Mills;Richard M. Miller;H. Gleeson;A. Seed;M. Hird;P. Styring
摘要研究了一系列高手性杂环酯。研究了杂原子的选择对分子的线性度以及材料的介晶性的影响。报道了材料的自发极化、倾角、电流响应时间和旋转粘度的测量结果。在低于自形状记忆合金相转变的30°C时，该系列所有成员的Ps均为∼100nCcm−2，高倾角约为30°。这些物理测量证实了这一系列中的硒衍生物中存在较高阶的反铁电相。
Abstract A series of highly chiral hetrocyclic esters have been studied. The effect that the choice of hetroatom has on the linearity of the molecules and hence the mesomophism of the materials has been investigated. Measurements of the spontaneous polarisation, tilt angle, current response time and rotational viscosities of the materials are reported. At 30°C below the transition from the SmA phase all members of the series show a Ps of ∼100nCcm−2 and a high tilt angle of about 30°. These physical measurements confirm the presence of a higher order antiferroelectric phase in the selenophene derivative in this series.