Pretransitional Layer Contraction at the Chiral Smectic A-to-Chiral Smectic C Phase Transition of a Chiral Nitroxide Radical

被引：8

作者：

Uchida, Yoshiaki ^{[1
]}

Suzuki, Katsuaki ^{[2
]}

Tamura, Rui ^{[2
]}

Aoki, Yoshio ^{[3
]}

Nohira, Hiroyuki ^{[3
]}

机构：

[1] Osaka Univ, Grad Sch Engn Sci, Toyonaka, Osaka 5608531, Japan

[2] Kyoto Univ, Grad Sch Human & Environm Studies, Sakyo Ku, Kyoto 6068501, Japan

[3] Saitama Univ, Grad Sch Sci & Engn, Saitama 3388570, Japan

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2013年 / 117卷 / 10期

基金：

日本学术振兴会;

关键词：

FERROELECTRIC LIQUID-CRYSTALS; BEHAVIOR;

D O I：

10.1021/jp400325q

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We have designed and synthesized a new chiral paramagnetic liquid crystalline compound with a nitroxide radical moiety showing chiral smectic A (SmA*) and C (SmC*) phases. This compound shows pretransitional layer contraction prior to the SmA*-to-SmC* phase transition in the cooling run. Electron paramagnetic resonance spectroscopy, X-ray diffraction analysis, and polarized optical microscopy reveal that a temperature-dependent conformational change is responsible for the pretransitional layer contraction.

引用

页码：3054 / 3060

页数：7

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