Occurrence of a transition between two polar orthogonal smectic phases in a new homologous series of novel bent-core compounds

Radhika, S.; Sadashiva, B.K.; Pratibha, R.

Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/3959

Full metadata record

DC Field	Value	Language
dc.contributor.author	Radhika, S.	-
dc.contributor.author	Sadashiva, B.K.	-
dc.contributor.author	Pratibha, R.	-
dc.date.accessioned	2011-01-20T09:04:08Z	-
dc.date.available	2011-01-20T09:04:08Z	-
dc.date.issued	2010-04	-
dc.identifier.citation	Liquid Crystals, 2010, Vol.37, p417	en
dc.identifier.issn	1366-5855-(Online)	-
dc.identifier.issn	0267-8292	-
dc.identifier.uri	http://hdl.handle.net/2289/3959	-
dc.description	Restricted Access.	en
dc.description.abstract	Two new homologous series of isomeric achiral five-ring bent-core compounds containing 3,4-disubstituted biphenyl moiety have been synthesised and the mesophases that they exhibit characterised. Compounds of series A are obtained from 4-hydroxybiphenyl-3-carboxylic acid while those in series B are prepared by reversing the position of the hydroxyl and carboxylic groups. This change seems to have a profound effect on the mesophase properties. Interestingly, for compounds of series A containing the long terminal chain, a transition between two polar orthogonal smectic phases has been observed. The observed mesophases have been characterised using a combination of polarised light optical microscopy, differential scanning calorimetry, X-ray diffraction studies and electro-optical measurements. This is the first example of a transition between two partial bilayer polar orthogonal smectic phases. In addition, the effect of a fluoro substituent ortho to the strongly polar terminal cyano group on the mesophase has also been examined.	en
dc.language.iso	en	en
dc.publisher	Taylor & Francis	en
dc.relation.uri	http://dx.doi.org/10.1080/02678291003632645	en
dc.rights	2010 Taylor & Francis	en
dc.subject	bent-core	en
dc.subject	biphenyl moiety	en
dc.subject	polar uniaxial smectic A	en
dc.subject	polar biaxial smectic A	en
dc.title	Occurrence of a transition between two polar orthogonal smectic phases in a new homologous series of novel bent-core compounds	en
dc.type	Article	en
Appears in Collections:	Research Papers (SCM)

Files in This Item:

File	Description	Size	Format
2010_Liquid Crystals_V37_p417.pdf Restricted Access	Restricted Access	2.88 MB	Adobe PDF	View/Open Request a copy

Show simple item record