Synthesis and mesogenic properties of novel board-like liquid crystals

M. Carmen Artal; Kenneth J. Toyne; John W. Goodby; Joaquín Barberá; Demetri J. Photinos

doi:10.1039/B105351P

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M. Carmen Artal,^a Kenneth J. Toyne,^a John W. Goodby,^a Joaquín Barberá^b and Demetri J. Photinos^c

Author affiliations

^a The Department of Chemistry, The University of Hull, Hull, UK

^b Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Zaragoza, Zaragoza, Spain

^c Department of Physics, University of Patras, Patras, Greece

Abstract

The syntheses of novel octa- and tetra-substituted systems based on tetrabenz[a,c,h,j]anthracene are reported. The disc-shaped octa-substituted material exhibits a columnar mesophase, whereas the tetra-substituted material exhibits a lamellar phase. Binary mixtures of the two materials were examined in order to explore the change over from discotic to calamitic behaviour as a function of concentration. At the crossover point, the possibility of the formation of a biaxial phase was investigated.

This article is part of the themed collection: Molecular topology in liquid crystals: Materials Discussion 4

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Article information

DOI: https://doi.org/10.1039/B105351P
Article type: Paper
Submitted: 19 Jun 2001
Accepted: 15 Aug 2001
First published: 09 Oct 2001

Download Citation

J. Mater. Chem., 2001,11, 2801-2807

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