NDLI: Effect of size of the lateral substituent at the chiral centre on the stability of some chiral smectic liquid-crystalline phases. The ‘propyl effect’ in some chiral phenylpropiolates and benzoates

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Effect of size of the lateral substituent at the chiral centre on the stability of some chiral smectic liquid-crystalline phases. The ‘propyl effect’ in some chiral phenylpropiolates and benzoates

Content Provider	Royal Society of Chemistry (RSC)
Author	Nishiyama, Isa Goodby, John W.
Copyright Year	1993
Abstract	Two separate homologous series of chiral smectic liquid crystals have been prepared and their physical properties investigated. The materials were designed so that the size of the lateral substituent at the chiral centre could be varied. Thus, the (S)- or (R)-1-alkylheptyl 4′-(4-n-nonyloxyphenylpropioloyloxy)biphenyl-4-carboxylates, and the (S)- or (R)-1-alkylheptyl 4′-(4-n-nonyloxybenzoyloxy)biphenyl-4-carboxylates were synthesized where the length of the lateral alkyl chain at the chiral centre was varied from methyl to propyl. It was discovered that the ferroelectric phase was depressed on ascending the series and eclipsed by the antiferroelectric phase for the propyl members. Thus, the propyl substituent appears as a crossover point for the change in ferroelectric to antiferroelectric properties in liquid-crystalline systems.
Starting Page	149
Ending Page	159
Page Count	11
File Format	PDF
ISSN	09599428
Volume Number	3
Issue Number	2
Journal	Journal of Materials Chemistry
DOI	10.1039/JM9930300149
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Homologous series Chirality Liquid crystal Substituent Stereocenter Alkane Ferroelectricity
Content Type	Text
Resource Type	Article
Subject	Chemistry Materials Chemistry

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