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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.
ISSN: 1744-683X
1744-6848 (Online)
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Copyright: (2006) by Royal Society of Chemistry.
Appears in Collections:Research Papers (SCM)

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