Synthesis and Mesomorphic Properties of 2-(4-Alkyloxyphenyl)benzothiazoles

被引：24

作者：

Ha, Sie-Tiong ^{[1
]}

Koh, Teck-Ming ^{[1
]}

Yeap, Guan-Yeow ^{[2
]}

Lin, Hong-Cheu ^{[3
]}

Boey, Peng-Lim ^{[2
]}

Win, Yip-Foo ^{[1
]}

Ong, Siew-Teng ^{[1
]}

Ong, Lay-Khoon ^{[1
]}

机构：

[1] Univ Tunku Abdul Rahman, Fac Sci & Engn, Kuala Lumpur 53300, Malaysia

[2] Univ Sains Malaysia, Sch Chem Sci, Liquid Crystal Res Lab, Minden, Penang, Malaysia

[3] Natl Chiao Tung Univ, Dept Mat Sci & Engn, Hsinchu, Taiwan

来源：

MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 2009年 / 506卷

关键词：

2-(4-alkyloxyphenyl)benzothiazole; heterocycles; Smectic A; structure-property relationship; LIQUID-CRYSTALLINE COMPOUNDS; SCHIFFS BASES; AZO-COMPOUNDS; BENZOTHIAZOLE; DERIVATIVES; PHASE; RING; 2-(4-HEPTYLOXYPHENYL)-6-DODECYLTHIOBENZOTHIAZOLE; 1,3,4-THIADIAZOLE; POLYMERS;

D O I：

10.1080/15421400902987347

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A homologous series of 2-(4-alkyloxyphenyl)benzothiazoles with an even number of carbons in the terminal alkoxyl chain was synthesized and characterized. The structure of the compounds was postulated using elemental analyses, FT-IR, NMR, and mass spectrometry techniques. Their liquid crystalline properties have been investigated by optical polarizing microscopy, DSC, and X-ray diffraction (XRD) techniques. Whilst the n-octyloxy to n-hexadecyloxy derivatives exhibited a monotropic smectic A phase, the n-ethoxy to n-hexyloxy and the n-octadecyloxy derivatives were not mesogenic. The mesomorphic properties of the present series were compared with other structurally related series to establish the chemical structure-mesomorphic properties relationship.

引用

页码：56 / 70

页数：15

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