Citation: Teck-Ming Koh, Sie-Tiong Ha, Guan-Yeow Yeap, Hong-Cheu Lin. New mesomorphic benzothiazol derivatives：Synthesis and characterization[J]. Chinese Chemical Letters, ;2013, 24(10): 926-928. shu

New mesomorphic benzothiazol derivatives：Synthesis and characterization

1.
a Faculty of Engineering & Science, Universiti Tunku Abdul Rahman, Jln Genting Klang, Setapak, Kuala Lumpur 53300, Malaysia;
2.
b Faculty of Science, Universiti Tunku Abdul Rahman, Jln Universiti, Bandar Barat, Kampar 31900, Malaysia;
3.
c Centre for Biodiversity Research, Universiti Tunku Abdul Rahman, Jln Universiti, Bandar Barat, Kampar 31900, Malaysia;
4.
d Liquid Crystal Research Laboratory, School of Chemical Sciences, Universiti Sains Malaysia, Minden 11800, Malaysia;
5.
e Department of Materials Science & Engineering, National Chiao Tung University, Hsinchu 300, Taiwan, China

Corresponding author: Sie-Tiong Ha,
Received Date: 12 April 2013
Available Online: 29 May 2013

In this paper, the synthesis of new mesomorphic benzothiazolyl derivatives, 6-ethoxy-2-[4-(4-alkyloxybenzoyloxy)benzylidenamino]benzothiazoles, is presented. The structures of the title compounds were elucidated using spectroscopic techniques, such as FT-IR, NMR (¹H and ¹³C), elemental analysis and EI-MS. The mesomorphic behaviours of these compounds were determined by differential scanning calorimetric and polarizing optical microscopic techniques. Compounds exhibited nematic and tilted smectic phases upon heating from crystal phase. An obvious odd-even effect was observed in this homologous series.
- Benzothiazole,
- Nematic,
- Smectic C,
- Mesomorphic
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1.
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