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A liquid-crystalline poly(iminomethylene) with cholesterol-containing pendant groups

✍ Scribed by C. A. van Walree; J. F. van der Pol; J. W. Zwikker

Book ID
104589244
Publisher
Elsevier Science
Year
2010
Tongue
English
Weight
489 KB
Volume
109
Category
Article
ISSN
0165-0513

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✦ Synopsis

Abstract

Two poly(iminomethylenes) with cholesterol‐containing pendant groups were synthesized. Using an aliphatic spacer, a liquid‐crystalline polymer was obtained, with equal amounts of right‐and left‐handed helices. With phenylene as bridging group, only oligomers resulted, probably for steric reasons. Some novel liquid‐crystalline esters of cholesterol are also presented.

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Diacid Monomer. The diacid monomer with the nonamethylene spacer was prepared using the method reported in a previous a r t i ~l e . ~ ## Polymerization Polyester 1 was obtained by melt-polycondensation of the corresponding monomers, the dicarboxylic acid, and the hydroquinone diacetate using zin