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Influence of branched chains on the mesomorphic properties of symmetrical and unsymmetrical triphenylene discotic liquid crystals

Stackhouse, Philip J.; Hird, Michael

Authors

Philip J. Stackhouse

Dr Mike Hird M.Hird@hull.ac.uk
Reader in Organic Chemistry/ Admissions Tutor/ Director of Chemistry Part-Time Blended Learning and Apprenticeship Programmes.

Abstract

A series of novel symmetrical and unsymmetrical triphenylene-based discotic liquid crystalline materials with one or six branched peripheral alkoxy chains have been prepared. These materials have been compared with analogous known symmetrical and unsymmetrical compounds to reveal a balance between steric and space-filling effects of the peripheral branched chains, which significantly affects intermolecular forces of attraction and packing, and hence affects melting and isotropisation temperatures of the liquid crystalline materials. The desired result of reduction of melting points and enhancement of isotropisation temperatures has been accomplished by use of branched alkoxy chains in both symmetrical and unsymmetrical materials.

Journal Article Type Article
Publication Date May 1, 2008
Journal LIQUID CRYSTALS
Print ISSN 0267-8292
Electronic ISSN 1366-5855
Publisher Taylor & Francis
Peer Reviewed Peer Reviewed
Volume 35
Issue 5
Pages 597-607
Institution Citation Stackhouse, P. J., & Hird, M. (2008). Influence of branched chains on the mesomorphic properties of symmetrical and unsymmetrical triphenylene discotic liquid crystals. Liquid crystals, 35(5), 597-607. doi:10.1080/02678290802040026
DOI https://doi.org/10.1080/02678290802040026
Keywords General Materials Science; General Chemistry; Condensed Matter Physics