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Synthesis of new schiff base ester liquid crystals with a benzothiazole core

Ha, Sie-Tiong and Koh, Teck Ming and Lee, Siew Ling and Yeap, Guan Yeow and Lin, Hong Cheu and Ong, Siew-Teng (2010) Synthesis of new schiff base ester liquid crystals with a benzothiazole core. Liquid Crystals, 37 (5). 547- 554. ISSN 0267-8292

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Official URL: http://dx.doi.org/10.1080/02678291003710425


A series of new calamitic liquid crystals, 6-methoxy-2-(4-alkanoyloxybenzylidenamino)benzothiazoles, comprising a benzothiazole core, terminal methoxy group and a Schiff base linkage were synthesised and characterised. This series comprises 12 members wherein members differ by the length of the alkanoyloxy chain (C n-1H2n-1COO-, where n?=?2–8, 10, 12, 14, 16, 18). Their mesomorphic properties were studied by using differential scanning calorimetry, optical polarising microscopy and powder X-ray diffraction techniques. The short chain derivatives (n?=?2 and 3) were non-mesogenic compounds, while an enantiotropic nematic phase was present throughout the remaining members of the series. The smectic C phase emerged from the decanoyloxy derivative onwards.

Item Type:Article
Uncontrolled Keywords:6-methoxy-2-(4-alkanoyloxybenzylidenamino)benzothiazole, nematic, schiff bases, smectic C
Subjects:Q Science
ID Code:26652
Deposited By: Yanti Mohd Shah
Deposited On:18 Jul 2012 11:47
Last Modified:30 Nov 2018 15:07

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