Liquid-Crystalline Properties of trans-A2 B2 -Porphyrins with Extended π-Electron Systems

Chemistry. 2015 May 11;21(20):7384-8. doi: 10.1002/chem.201500295. Epub 2015 Mar 30.

Abstract

Incorporation of four trialkoxyphenyl substituents combined with extending the π-conjugated system has allowed porphyrins to display liquid-crystalline columnar phases at room temperature. 2D and 3D columnar structures were observed as well as a biaxial smectic phase.

Keywords: columnar phases; liquid crystals; porphyrins; smectic phases.