Synthesis and properties of Schiff's bases derived from 1,3,4-thiadiazole as a mesogenic unit

Article abstract of DOI:10.1080/10587250008025240

Some new liquid crystalline 2,5-disubstituted 1,3,4-thiadiazole derivatives incorporating a central group (-CH=N-) have been synthesized by treating 2-amino-5-(4-alkoxyphenyl)-1,3,4-thiadiazole with corresponding p-alkoxybenzaldehyde. Their structures have been characterized with Elementary Analysis, IR, ¹HNMR and MS, and their properties were determined by using DSC and Texture. All 12 compounds are enantiotropic liquid crystals, and most of them exhibit nematic mesomorphism and broad smectic C mesomorphic ranges. Several compounds show only the smectic C mesophase. By introducing an -OH group into the phenyl ring the thermal stability of the mesophases increases due to the formation of a hydrogen bond.

Full text of DOI:10.1080/10587250008025240

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Molecular Crystals and
Liquid Crystals Science
and Technology. Section A.
Molecular Crystals and Liquid
Crystals
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Synthesis and Properties
of Schiff's Bases Derived
from 1,3,4-Thiadiazole as a
Mesogenic Unit
Yan Xu a , Wanfang Lu a & Zihou Tai a
a State Key Laboratory of Coordination Chemistry,
Coordination Chemistry Institute Nanjing University,
Nanjing, 210093, P.R. China
Published online: 24 Sep 2006.
To cite this article: Yan Xu , Wanfang Lu & Zihou Tai (2000) Synthesis and Properties
of Schiff's Bases Derived from 1,3,4-Thiadiazole as a Mesogenic Unit, Molecular
Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and
Liquid Crystals, 350:1, 151-159, DOI: 10.1080/10587250008025240
To link to this article: http://dx.doi.org/10.1080/10587250008025240
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