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Physical Chemistry Chemical Physics Vol -19

Physical Chemistry Chemical Physics Vol - 19 Issue - 18

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A nematic to nematic transformation exhibited by a rod-like liquid crystal

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A nematic to nematic transformation exhibited by a rod-like liquid crystal

Content Provider	Royal Society of Chemistry (RSC)
Author	Mandle, Richard J. Goodby, J. W. Cowling, S. J.
Copyright Year	2017
Abstract	A novel, highly polar rod-like liquid crystal was found to exhibit two distinct nematic mesophases (N and NX). When studied by microscopy and X-ray scattering experiments, and under applied electric fields, the nematic phases are practically identical. However, calorimetry experiments refute the possibility of an intervening smectic mesophase, and the transformation between the nematic phases was associated with a weak thermal event. Analysis of measured dielectric data, along with molecular properties obtained from DFT calculations, applying the Maier–Meier relationship allowed for the degree of antiparallel pairing of dipoles in both nematic phases to be quantified. Based on the results, we conclude that the onset of the lower temperature phase is driven by the formation of antiparallel molecular associations.
Starting Page	11429
Ending Page	11435
Page Count	7
File Format	HTM / HTML PDF
ISSN	14639076
Volume Number	19
Issue Number	18
Journal	Physical Chemistry Chemical Physics
DOI	10.1039/c7cp00456g
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Meier Liquid crystal Microscopy Maier X-ray scattering techniques Calorimetry Mesophase Dielectric
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy Physical and Theoretical Chemistry

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