Effects of nitro substituents on the properties of a ferroelectric liquid crystalline side chain polysiloxane

被引：28
|
作者：
Svensson, M
Helgee, B [1 ]
Skarp, K
Andersson, G
机构：
[1] Chalmers Univ Technol, Dept Polymer Technol, S-41296 Gothenburg, Sweden
[2] Chalmers Univ Technol, Dept Phys, S-41296 Gothenburg, Sweden
来源：
JOURNAL OF MATERIALS CHEMISTRY | 1998年 / 8卷 / 02期
关键词：
D O I：
10.1039/a704918h
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：
The syntheses of chiral liquid crystalline side chain polysiloxanes with lateral nitro substituents in the mesogenic core are described. The influence of the substituents and substituent positions on phase behaviour and electro-optical properties are investigated and compared. The lateral nitro groups strongly affect the phase behaviour of the side chain precursors as well as the liquid crystalline polymers. Properties in smectic A and C* phases are discussed with respect to substituent position. One side chain precursor exhibits very large spontaneous polarization of similar to 700 nC cm(-2).
引用
收藏
页码：353 / 362
页数：10
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