Polar columnar and lamellar mesophases in homologous bent-core compounds derived from methyl 3,5-dihydroxybenzoate

Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/5865

Title:	Polar columnar and lamellar mesophases in homologous bent-core compounds derived from methyl 3,5-dihydroxybenzoate
Authors:	Umadevi, S. Radhika, S. Sadashiva, B.K.
Keywords:	lateral substituent polar columnar phase antiferroelectric SmCPAF phase coexistence
Issue Date:	Aug-2013
Publisher:	Taylor & Francis
Citation:	Liquid Crystals, 2013, Vol.40, p 1035
Abstract:	The synthesis and mesomorphic properties of the first three homologous series of symmetrical seven-ring bent-core compounds derived from methyl 3,5-dihydroxybenzoate have been described. In all the three series the lower homologues show an intercalated smectic (B6) phase. The middle homologues exhibit a polar columnar phase that shows antiferroelectric characteristics, while the higher homologues exhibit a switchable smectic phase with chiral conglomerates (SmCPAF). More interestingly, in one of the homologues, coexistence of a switchable columnar phase and a switchable lamellar phase has been observed. The mesophases were characterised using classical techniques of polarised light optical microscopy, differential scanning calorimetry, X-ray diffraction and electro-optical studies.
Description:	Restricted Access.
URI:	http://hdl.handle.net/2289/5865
ISSN:	0267-8292 1366-5855 (Online)
Alternative Location:	http://dx.doi.org/10.1080/02678292.2013.802817
Copyright:	2013 Taylor & Francis
Appears in Collections:	Research Papers (SCM)

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