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


Citation

Salisu, Abdulsalam Abubakar and Ab. Rahman, Mohamad Zaki and Silong, Sidik and Lutfor, Md Rahman and Ahmad @ Ayob, Mansor (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

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.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Science
DOI Number: https://doi.org/10.1080/02678292.2010.550141
Publisher: Taylor & Francis
Keywords: Liquid crystal; Bisazobenzene; Nematic phase; Smectic phase; Calamitic; Thermotropic.
Depositing User: Nur Farahin Ramli
Date Deposited: 29 Aug 2013 02:27
Last Modified: 06 Aug 2014 05:39
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1080/02678292.2010.550141
URI: http://psasir.upm.edu.my/id/eprint/24797
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