EFFECTS OF NITRO SUBSTITUENTS ON THE PROPERTIES OF A FERROELECTRIC LIQUID-CRYSTALLINE SIDE-CHAIN POLYSILOXANE

Authors
SVENSSON M HELGEE B SKARP K ANDERSSON G
Citation
M. Svensson et al., EFFECTS OF NITRO SUBSTITUENTS ON THE PROPERTIES OF A FERROELECTRIC LIQUID-CRYSTALLINE SIDE-CHAIN POLYSILOXANE, Journal of materials chemistry, 8(2), 1998, pp. 353-362
Citations number
35
Categorie Soggetti
Chemistry Physical","Material Science
Journal title
Journal of materials chemistry → ACNP
ISSN journal
09599428
Volume
8
Issue
2
Year of publication
1998
Pages
353 - 362
Database
ISI
SICI code
0959-9428(1998)8:2<353:EONSOT>2.0.ZU;2-C
Abstract
The syntheses of chiral liquid crystalline side chain polysiloxanes wi th lateral nitro substituents in the mesogenic core are described. The influence of the substituents and substituent positions on phase beha viour and electro-optical properties are investigated and compared. Th e lateral nitro groups strongly affect the phase behaviour of the side chain precursors as well as the liquid crystalline polymers. Properti es in smectic A and C phases are discussed with respect to substituen t position. One side chain precursor exhibits very large spontaneous p olarization of similar to 700 nC cm(-2).