Research Article Open Access

Nematic and Smectic Mesophase from Calamitic Bisazobenzene Liquid Crystal: Synthesis and Characterization of 1- Methoxyhexyloxy-4'-(4-Phenylazo) Azobenzene Hybrid Molecule

Sidik Silong, Abdulsalam Abubakar Salisu, Muhamad Zaki Ab Rahman, Lutfor Rahman and Mansor Ahmad

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.

American Journal of Applied Sciences
Volume 6 No. 4, 2009, 561-564

DOI: https://doi.org/10.3844/ajassp.2009.561.564

Submitted On: 17 May 2008 Published On: 30 April 2009

How to Cite: Silong, S., Salisu, A. A., Rahman, M. Z. A., Rahman, L. & Ahmad, M. (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), 561-564. https://doi.org/10.3844/ajassp.2009.561.564

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Keywords

  • liquid crystal
  • bisazobenzene
  • calamitic
  • nematic phase
  • smectic phase