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Title: The infuence of lateral substituents on the occurrence of a transition between two polar smectic phases with antiferroelectric properts
Authors: Radhika, S.
Keshava Murthy, R.N.
Sadashiva, B.K.
Pratibha, R.
Keywords: Polar mesophases
smectic C
Issue Date: Jul-2015
Publisher: Taylor & Francis
Citation: Liquid Crystals, 2015, Vol.42, p1043-1058
Abstract: The synthesis and mesomorphic properties of two homologous series of bent-core (BC) compounds derived from 2,7-dihydroxynaphthalene are reported. The two series differ from one another by an electron-withdrawing or an electron-donating lateral substituent on the middle phenyl ring of the arms of the BC. Very interestingly, contrasting results are obtained in which polar phases are observed in compounds containing a chloro substituent and apolar smectic C and nematic phases are obtained when this substituent is replaced by a methyl group. The mesophases have been characterised by using a combination of polarised light optical microscopy, differential scanning calorimetry, X-ray diffraction measurements, electro-optical and dielectric studies.
Description: Restricted Access.
ISSN: 0267-8292
1366-5855 (online)
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Copyright: 2015 Taylor & Francis
Appears in Collections:Research Papers (SCM)

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