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Title: T-shaped non-symmetrical twin liquid crystalline compounds
Authors: Varia, M.C.
Kumar, Sandeep
Prajapati, A.K.
Keywords: azo-ester
ether–ester linkage
flexible spacers
non-symmetrical dimers,
smectic A
Issue Date: Aug-2012
Publisher: Taylor & Francis
Citation: Liquid Crystals, 2012, Vol.39, p933-942
Abstract: New unconventional T-shaped non-symmetrical dimeric liquid crystalline compounds have been synthesised and their thermotropic properties studied on the hot-stage of a polarising microscope. These compounds consist of an azo-ester mesogenic unit with a range of terminal substituents (–CH3, –OCH3, –NO2 or –Cl) at one end, interconnected by a flexible spacer (n = 4, 5 or 10) via ether and ester linking units to a biphenyl moiety at the lateral hydroxyl position of the azo-ester. All the compounds were characterised using a combination of elemental analysis and standard spectroscopic methods. The compounds were found to exhibit enantiotropic nematic and smectic mesophases. The effect of different terminal substituents on mesomorphism is discussed.
Description: Restricted Access.
ISSN: 0267-8292
1366-5855 (online)
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Copyright: 2012 Taylor & Francis
Appears in Collections:Research Papers (SCM)

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