Calamitic bisazobenzene liquid crystal series: synthesis and mesomorphic properties of 1-methoxyalkyloxy-4 '-(4-phenylazo)azobenzene

A. A. Salisu, and M. Z. Ab. Rahman, and S. Silong, and Md Lutfor Rahman, and M. Ahmad, (2011) Calamitic bisazobenzene liquid crystal series: synthesis and mesomorphic properties of 1-methoxyalkyloxy-4 '-(4-phenylazo)azobenzene. Liquid Crystals, 38 (4). pp. 423-431. ISSN 0267-8292

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Abstract

A new series of calamitic liquid crystal materials with bisazobenzene moieties as a core has been synthesised and characterised by spectroscopic methods. The mesomorphic properties were investigated by differential scanning calorimetry, optical polarising microscopy and X-ray diffraction. The presence of nematic and smectic A mesophases was confirmed by the textures and X-ray diffraction studies. All the compounds are found to show enantiotropic mesophase behaviour. The compounds show a significant photoisomerisation under appropriate light irradiation.

Item Type: Article
Uncontrolled Keywords: Liquid crystal, Bisazobenzene, Nematic phase, Smectic phase, calamitic, Thermotropic
Subjects: ?? QD241-441 ??
Divisions: SCHOOL > School of Science and Technology
Depositing User: Unnamed user with email storage.bpmlib@ums.edu.my
Date Deposited: 10 Aug 2011 06:49
Last Modified: 19 Oct 2017 03:50
URI: http://eprints.ums.edu.my/id/eprint/1431

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