Ferroelectric properties of paramagnetic, all-organic, chiral nitroxyl radical liquid crystals

被引:57
作者
Ikuma, N
Tamura, R [1 ]
Shimono, S
Uchida, Y
Masaki, K
Yamauchi, J
Aoki, Y
Nohira, H
机构
[1] Kyoto Univ, Grad Sch Global Environm Studies, Kyoto 6068501, Japan
[2] Kyoto Univ, Grad Sch Human & Environm Studies, Kyoto 6068501, Japan
[3] Kyoto Univ, Grad Sch Sci, Kyoto 6068501, Japan
[4] Saitama Univ, Fac Engn, Urawa, Saitama 3388570, Japan
关键词
D O I
10.1002/adma.200501531
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Paramagnetic, purely organic, chiral liquid crystals showing a thermally stable smectic C* phase with low viscosity over a wide temperature range (between 50 and 90 degrees C) have been successfully prepared for the first time. Their ferroelectric properties have been characterized by measuring the spontaneous polarization, the optical response time of bistable switching under an applied electric field, and the tilt angle. The Figure shows the broken fan-shaped texture of the SmC* phase of (2S,5S)-2c at 80.0 degrees C.
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页码:477 / +
页数:5
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