Azo-functionalised liquid crystalline dimers composed of bent-core and rod-like moieties: synthesis and mesomorphic properties

Nagaveni, N.G.; Prasad, Veena; Roy, Arun

Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/5953

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DC Field	Value	Language
dc.contributor.author	Nagaveni, N.G.	-
dc.contributor.author	Prasad, Veena	-
dc.contributor.author	Roy, Arun	-
dc.date.accessioned	2014-08-21T14:35:22Z	-
dc.date.available	2014-08-21T14:35:22Z	-
dc.date.issued	2013-08	-
dc.identifier.citation	Liquid Crystals, 2013, Vol.40, p 1001-1015	en
dc.identifier.issn	0267-8292	-
dc.identifier.issn	1366-5855 (Online)	-
dc.identifier.uri	http://hdl.handle.net/2289/5953	-
dc.description	Restricted Access.	en
dc.description.abstract	Three new series of azo-functionalised dimers composed of banana (bent-core) and rod-like moieties connected via flexible alkylene spacer have been synthesised and characterised. Here, the molecular structure – liquid crystalline property relationship has been studied, mainly by varying the spacer chain length in addition to the effect of polar –CN end group. All the compounds synthesised are characterised by the organic spectroscopic methods. The thermal behaviour of these dimers is investigated by the polarising optical microscopy, differential scanning calorimetry, electro-optical and X-ray diffraction studies. Interestingly, we observed a variety of mesophases in these dimers, namely, N, SmA, SmC, SmX, SmY, Colx and Coly. We even observed a re-entrant phenomena of the mesophases in one of these dimers. The nematic phases of some of these dimers exhibit electric field induced textural patterns. The dimers are photosensitive and the T NI was found to decrease as the illuminated light intensity increases.	en
dc.language.iso	en	en
dc.publisher	Taylor & Francis	en
dc.relation.uri	http://dx.doi.org/10.1080/02678292.2013.804128	en
dc.rights	2013 Taylor & Francis	en
dc.subject	photochromic	en
dc.subject	non-symmetrical	en
dc.subject	nematic phase	en
dc.subject	dimers, non-symmetrical	en
dc.title	Azo-functionalised liquid crystalline dimers composed of bent-core and rod-like moieties: synthesis and mesomorphic properties	en
dc.type	Article	en
Appears in Collections:	Research Papers (SCM)

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