Title:	High-temperature chiral nematic phase in naphthalene and cholesterol derivative liquid crystal: characterisation and dielectric relaxation study
Authors:	Singh, Dharmendra Pratap Varia, M.C. Gupta, S.K. Sagar, Laxmi K. Kumar, Sandeep Yadav, Satya P. Manohar, Rajiv
Keywords:	Chmical synthesis differential scanning Calorimetry (DSC) polarising optical microscopy dielectric properties
Issue Date:	May-2013
Publisher:	Taylor and Francis
Citation:	Physics and chemistry of Liquids, 2013, Vol. 51, p663-676
Abstract:	In this article, we report the synthesis of the naphthalene and cholesterol derivative 2-(cholesterol-n-decanoate)-6-(heptyloxy benzoate) naphthalene (2CD6HBN) liquid crystal (LC) having chiral nematic (N*) mesophase. The synthesised mesophase has been characterised using polarising optical microscopy (POM) and differential scanning calorimetric (DSC) study. The presence of the rigid and less polarisable cores causes a higher N*-Iso transition temperature. The relaxation phenomenon of the present LC sample was analysed by the dielectric relaxation spectroscopic study. The dielectric properties, electrical conductivity and the relaxation time were observed as a function of the temperature. The relaxation time follows the first-order exponential decay–type equation. The properties of the LC sample have also been correlated with the structure of the compound.
Description:	Restricted Access.
URI:	http://hdl.handle.net/2289/5842
ISSN:	1029-0451 (Online) 0031-9104
Alternative Location:	http://dx.doi.org/10.1080/00319104.2013.771263
Copyright:	2013 Taylor & Francis
Appears in Collections:	Research Papers (SCM)

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