New symmetric azobenzene molecules of varied central cores: Synthesis and characterisation for liquid crystalline properties

Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/6773

Title:	New symmetric azobenzene molecules of varied central cores: Synthesis and characterisation for liquid crystalline properties
Authors:	Srinivasa, H.T.
Keywords:	resorcinol naphthalene smectic B phase
Issue Date:	Sep-2017
Publisher:	Taylor & Francis
Citation:	Liquid Crystals, 2017, Vol.44, p 1384-1393
Abstract:	A new series of azobenezene liquid crystals (LCs) was designed and synthesised by known and straightforward methods. The central connecting cores of the molecules varied viz., benzene/naphthalene/biphenyl. The molecular structures were confirmed by infrared, UV, nuclear magnetic resonance spectroscopic techniques. The LC texture and thermal phase behaviours were investigated by polarising optical microscopy and differential scanning calorimetry. Smectic B phase was found in biphenyl-derived azobenzene ester. The effect of central core on LC properties was investigated. The decreased angle at central connecting core suppressed the melting points, phase transition temperatures without losing LC properties, whereas, in moderate angle compounds LC properties were suppressed. The compounds with increased angle at central core favours rich mesomorphism.
Description:	Restricted Access.
URI:	http://hdl.handle.net/2289/6773
ISSN:	0267-8292 1366-5855 (Online)
Alternative Location:	http://dx.doi.org/10.1080/02678292.2017.1280620
Copyright:	2017 Taylor & Francis
Appears in Collections:	Research Papers (SCM)

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