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J Am Chem Soc. 2010 Jun 30;132(25):8530-1. doi: 10.1021/ja101866e.

Columnar liquid crystal with a spontaneous polarization along the columnar axis.

Author information

1
School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.

Abstract

A fan-shaped molecule (2), carrying hydrogen-bonding amide groups in proximity to its polar aromatic core, self-assembles into a columnar liquid crystalline mesophase, which unprecedentedly possesses a spontaneous macroscopic polarization along the columnar axis. Due to its polar nature, the mesophase displays a signal of second harmonic generation (SHG), which disappears on phase transition to an isotropic melt and then retrieves its original intensity on subsequent cooling.

PMID:
20527880
DOI:
10.1021/ja101866e

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