Four-ring achiral unsymmetrical bent core molecules forming strongly fluorescent smectic liquid crystals with spontaneous polar and chiral ordered B7 and B1 phases

Rajdeep Deb; Rahul Kanti Nath; Manoj Kumar Paul; Nandiraju V. S. Rao; Francis Tuluri; Yongqiang Shen; Renfan Shao; Dong Chen; Chenhui Zhu; Ivan I. Smalyukh; Noel A. Clark

doi:10.1039/C0JM01539C

Four-ring achiral unsymmetrical bent core molecules forming strongly fluorescent smectic liquid crystals with spontaneous polar and chiral ordered B7 and B1 phases

Rajdeep Deb,^ab Rahul Kanti Nath,^a Manoj Kumar Paul,^a Nandiraju V. S. Rao,^a Francis Tuluri,^c Yongqiang Shen,^b Renfan Shao,^b Dong Chen,^b Chenhui Zhu,^b Ivan I. Smalyukh^b and Noel A. Clark^b

Author affiliations

^a Chemistry Department, Assam University, Silchar, India
E-mail: drnvsrao@gmail.com
Fax: +91-3842-270802
Tel: +91-3842-270943

^b Department of Physics and Liquid Crystal Materials Research Center, University of Colorado, Boulder, USA

^c Jackson State University, USA

Abstract

Achiral molecules based on a novel four-ring core with an ester linkage at the molecular bend are shown to exhibit smectic liquid crystal phases with spontaneously chiral and polar layers (SmCP phases), including their polarization splay modulated and layer undulated (PMLU) variants, B7 and B1. Additionally, these compounds exhibit strong photoluminescence, the first family of SmCP phases to do so.

Journal of Materials Chemistry

Four-ring achiral unsymmetrical bent core molecules forming strongly fluorescent smectic liquid crystals with spontaneous polar and chiral ordered B7 and B1 phases

Abstract

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Four-ring achiral unsymmetrical bent core molecules forming strongly fluorescent smectic liquid crystals with spontaneous polar and chiral ordered B7 and B1 phases

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