Title:	Bistable linear electro-optical switching in the B7 phase of novel bent-core molecules
Authors:	Umadevi, S. Jakli, A. Sadashiva, B.K.
Issue Date:	2006
Publisher:	Royal Society of Chemistry
Citation:	Soft Matter, 2006, Vol.2, p215-222
Abstract:	Three novel symmetrical bent-core compounds were synthesized where the terminal alkoxy linkages of the original bent-core mesogen forming a B2 phase was converted to n-alkyl carboxylates. It is found that instead of the B2 phase, all three compounds exhibit a transition between B7 and B2 mesophases. The physical and electro-optical properties have been investigated by polarizing optical microscopy, differential scanning calorimetry, X-ray diffraction and electric field experiments. The higher temperature B7 phase has been shown to exhibit bistable but analogous linear electro-optical switching without any observable polarization peak. We analyze two theoretical models and find that a local triclinic symmetry may be responsible for the unusual electro-optical switching.
Description:	Restricted Access.
URI:	http://hdl.handle.net/2289/1662
ISSN:	1744-683X 1744-6848 (Online)
Alternative Location:	http://dx.doi.org/10.1039/b515933d
Copyright:	(2006) by Royal Society of Chemistry.
Appears in Collections:	Research Papers (SCM)

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