Synthesis and mesomorphic behavior of benzothiazole-based liquid crystals having terminal methoxyl group

Sie Tiong Ha; Teck Ming Koh; Siew Teng Ong; Yasodha Sivasothy

doi:10.1016/j.cclet.2009.06.023

Synthesis and mesomorphic behavior of benzothiazole-based liquid crystals having terminal methoxyl group

Sie Tiong Ha, Teck Ming Koh, Siew Teng Ong, Yasodha Sivasothy

Research output: Contribution to journal › Article › Research › peer-review

7 Citations (Scopus)

Abstract

A homologous series of benzothiazole derivatives, 6-methoxy-2-(4-alkanoyloxybenzylidenamino)benzothiazoles, were synthesized and characterized using FT-IR, ¹H and ¹³C NMR, mass spectrometry and elemental analysis. Enantiotropic nematic phase was observed throughout the entire series. Smectic C phase only emerged from the decanoyloxy derivative onwards. The terminal methoxyl group and the ester linkage influenced the mesomorphic behavior of the present series.

Original language	English
Pages (from-to)	1449-1452
Number of pages	4
Journal	Chinese Chemical Letters
Volume	20
Issue number	12
DOIs	https://doi.org/10.1016/j.cclet.2009.06.023
Publication status	Published - Dec 2009
Externally published	Yes

Keywords

Benzothiazole
Liquid crystal
Nematic
Schiff bases
Smectic C

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10.1016/j.cclet.2009.06.023

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title = "Synthesis and mesomorphic behavior of benzothiazole-based liquid crystals having terminal methoxyl group",

abstract = "A homologous series of benzothiazole derivatives, 6-methoxy-2-(4-alkanoyloxybenzylidenamino)benzothiazoles, were synthesized and characterized using FT-IR, 1H and 13C NMR, mass spectrometry and elemental analysis. Enantiotropic nematic phase was observed throughout the entire series. Smectic C phase only emerged from the decanoyloxy derivative onwards. The terminal methoxyl group and the ester linkage influenced the mesomorphic behavior of the present series.",

keywords = "Benzothiazole, Liquid crystal, Nematic, Schiff bases, Smectic C",

author = "Ha, {Sie Tiong} and Koh, {Teck Ming} and Ong, {Siew Teng} and Yasodha Sivasothy",

note = "Funding Information: The author (S.T. Ha) would like to thank Universiti Tunku Abdul Rahman (UTAR) for the research facilities and financial support (No. 6202/K06), and the Malaysian Toray Science Foundation (No. 4359/000) for funding this project. T.M. Koh would like to acknowledge UTAR for the award of the research and teaching assistantships.",

year = "2009",

month = dec,

doi = "10.1016/j.cclet.2009.06.023",

language = "English",

volume = "20",

pages = "1449--1452",

journal = "Chinese Chemical Letters",

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number = "12",

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TY - JOUR

T1 - Synthesis and mesomorphic behavior of benzothiazole-based liquid crystals having terminal methoxyl group

AU - Ha, Sie Tiong

AU - Koh, Teck Ming

AU - Ong, Siew Teng

AU - Sivasothy, Yasodha

N1 - Funding Information: The author (S.T. Ha) would like to thank Universiti Tunku Abdul Rahman (UTAR) for the research facilities and financial support (No. 6202/K06), and the Malaysian Toray Science Foundation (No. 4359/000) for funding this project. T.M. Koh would like to acknowledge UTAR for the award of the research and teaching assistantships.

PY - 2009/12

Y1 - 2009/12

N2 - A homologous series of benzothiazole derivatives, 6-methoxy-2-(4-alkanoyloxybenzylidenamino)benzothiazoles, were synthesized and characterized using FT-IR, 1H and 13C NMR, mass spectrometry and elemental analysis. Enantiotropic nematic phase was observed throughout the entire series. Smectic C phase only emerged from the decanoyloxy derivative onwards. The terminal methoxyl group and the ester linkage influenced the mesomorphic behavior of the present series.

AB - A homologous series of benzothiazole derivatives, 6-methoxy-2-(4-alkanoyloxybenzylidenamino)benzothiazoles, were synthesized and characterized using FT-IR, 1H and 13C NMR, mass spectrometry and elemental analysis. Enantiotropic nematic phase was observed throughout the entire series. Smectic C phase only emerged from the decanoyloxy derivative onwards. The terminal methoxyl group and the ester linkage influenced the mesomorphic behavior of the present series.

KW - Benzothiazole

KW - Liquid crystal

KW - Nematic

KW - Schiff bases

KW - Smectic C

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U2 - 10.1016/j.cclet.2009.06.023

DO - 10.1016/j.cclet.2009.06.023

M3 - Article

AN - SCOPUS:70350077263

SN - 1001-8417

VL - 20

SP - 1449

EP - 1452

JO - Chinese Chemical Letters

JF - Chinese Chemical Letters

IS - 12

ER -

Synthesis and mesomorphic behavior of benzothiazole-based liquid crystals having terminal methoxyl group

Abstract

Keywords

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