Novel five-ring bent-core compounds exhibiting a transition from the electro-optically nonswitchable to a switchable B7 phase

Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/1649

Title:	Novel five-ring bent-core compounds exhibiting a transition from the electro-optically nonswitchable to a switchable B7 phase
Authors:	Umadevi, S. Sadashiva, B.K.
Issue Date:	6-Oct-2006
Publisher:	American Chemical Society
Citation:	Chemistry of Materials, 2006, Vol.18 p5186 -5192
Abstract:	Two homologous series of achiral five-ring bent-core compounds derived from 2-cyano- or 2-nitro-resorcinol having terminal n-alkyl carboxylate groups have been synthesized and characterized. All the compounds investigated show enantiotropic mesophases. Interestingly, the compounds derived from 2-cyanoresorcinol display two mesophases and the higher temperature mesophase shows unusual electro-optical characteristics. In contrast, the nitro-substituted compounds exhibit only one mesophase, which switches electro-optically. This mesophase and the higher temperature phase exhibited by the cyano-substituted compounds show similar characteristics and have been shown to be the same. These observations are unusual but very interesting and represent the first example of a transition from the electro-optically nonswitchable B7X phase to a switchable B7FE phase.
Description:	Restricted Access.
URI:	http://hdl.handle.net/2289/1649
ISSN:	0897-4756
Alternative Location:	http://dx.doi.org/10.1021/cm0604209
Copyright:	(2006) by American Chemical Society
Appears in Collections:	Research Papers (SCM)

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