Nematic and smectic mesophase from calamitic bisazobenzene liquid crystal: Synthesis and characterization of 1- methoxyhexyloxy-4'-(4-Phenylazo) azobenzene hybrid molecule

Sidik Silong, and Abdulsalam Abubakar Salisu, and M. Z A Rahman, and Rahman, Md Lutfor and Mansor Ahmad, (2009) Nematic and smectic mesophase from calamitic bisazobenzene liquid crystal: Synthesis and characterization of 1- methoxyhexyloxy-4'-(4-Phenylazo) azobenzene hybrid molecule. American Journal of Applied Sciences, 6 (4). pp. 561-564. ISSN 1546-9239

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Abstract

A new hybrid calamitic liquid crystal material with rod-shape bisazobenzene moieties as a core has been synthesized and characterized by spectroscopic methods. The mesomorphic properties were investigated by differential scanning colorimetry, polarizing optical microscopy and X-Ray diffraction. The rod-shaped molecule 1- methoxyhexyloxy-4'-(4-phenylazo)azobenzene was prepared by diazotization of 4-phenylazoaniline, coupling with phenol and subsequent etherification of 1- Bromohexyloxy-4'-(4-phenylazo)azobenzene in methanol. The presence of enantiotropic nematic and smectic A mesophases were confirmed by the textures and X-Ray diffraction. © 2009 Science Publications.

Item Type: Article
Uncontrolled Keywords: Bisazobenzene, Calamitic, Liquid crystal, Nematic phase, Smectic phase
Subjects: ?? QC170-197 ??
Divisions: SCHOOL > School of Science and Technology
Depositing User: ADMIN ADMIN
Date Deposited: 16 Mar 2011 05:33
Last Modified: 19 Oct 2017 07:03
URI: http://eprints.ums.edu.my/id/eprint/1561

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