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Synthesis and characterization of thermotropic liquid crystals consisting heterocyclic benzothiazole core system

Foo, Kokleei and Ha, Sie-Tiong and Lee, Siew Ling (2014) Synthesis and characterization of thermotropic liquid crystals consisting heterocyclic benzothiazole core system. Asian Journal of Chemistry, 26 (22). pp. 7627-7631. ISSN 0970-7077

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Official URL: https://doi.org/10.14233/ajchem.2014.17135

Abstract

A new series of rod-shaped mesomorphic compounds, 6-methyl-2-(4-alkoxybenzylidenamino)benzothiazoles bearing a fused thiazole ring and imine central linkage, were prepared and their molecular structures were confirmed via mass spectrometric, IR and NMR spectroscopic techniques. The mesomorphic properties were identifed using differential scanning calorimetry, polarizing optical microscopy and X-ray diffraction analysis. All compounds showed enantiotropic mesomorphism. Whilst the lower members of the series, butyloxy, hexyloxy and octyloxy derivatives exhibited nematic phase, the medium members (decyloxy derivative) exhibited nematic and smectic A phases. The higher members (C12, C14, C16 and C18 derivatives) displayed smectic A phase only.

Item Type:Article
Uncontrolled Keywords:nematic, smectic
Subjects:Q Science
Divisions:Science
ID Code:62776
Deposited By: Fazli Masari
Deposited On:14 Jun 2017 08:36
Last Modified:14 Jun 2017 08:36

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