Synthesis, Crystal Structure, and Mesomorphic Properties of Liquid Crystals with a Bis(tropon-2-yl)-4,4’-azobisbenzoate Core

Kanji KUBO; Akira MORI; Seiji UJIIE; Carsten TSCHIERSKE

doi:10.5650/jos.54.179

Chemistry and Organic Synthesis

Synthesis, Crystal Structure, and Mesomorphic Properties of Liquid Crystals with a Bis(tropon-2-yl)-4,4’-azobisbenzoate Core

Kanji KUBO, Akira MORI, Seiji UJIIE, Carsten TSCHIERSKE

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Keywords: tropone, azobenzene, liquid crystal, nematic phase, crystal structure

JOURNAL FREE ACCESS

2005 Volume 54 Issue 3 Pages 179-183

DOI https://doi.org/10.5650/jos.54.179

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Abstract

New troponoid liquid crystals with bis(tropon-2-yl)-4,4’-azobisbenzoate core were prepared. Compound (1) had enantiotropic nematic and/or smectic C phase. The crystals of 1a had intermolecular π-π interactions between azobenzene planes and between tropone rings. The nematic liquid crystal (1a) did not form any layer structure in crystal state. X-ray diffraction studies revealed that 1c and 1d formed the tilted layers in the smectic C phase.

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