New liquid crystals derived from thiophene connected to the 1,2,3-triazole heterocycle

In this work, six new compound derivatives from thiophene were synthesised. The three symmetrical compounds were synthesised containing two heterocyclic 1,2,3-triazole on each side of thiophene, 2,5-disubstituted and the three non-symmetrical compounds were synthesised containing alkyne groups as a...

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Bibliographic Details
Published in:Liquid crystals 2015-12, Vol.42 (12), p.1798-1807
Main Authors: Girotto, Edivandro, Bechtold, Ivan H., Gallardo, Hugo
Format: Article
Language:English
Subjects:
Alkynes
Chemical compounds
Chemical synthesis
Crystal structure
Derivatives
Emission
fluorescence quantum yields
Group theory
Liquid crystal polymers
Liquid crystals
Mesophase
non-symmetrical compounds
Spacers
terminal substituents
Thiophenes
triple bond unit as spacer
XRD experiments
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Summary:In this work, six new compound derivatives from thiophene were synthesised. The three symmetrical compounds were synthesised containing two heterocyclic 1,2,3-triazole on each side of thiophene, 2,5-disubstituted and the three non-symmetrical compounds were synthesised containing alkyne groups as a spacer in replacing one of these heterocycles. The structural modifications were made by changing the number of alkoxy groups in order to understand the relation between structure and mesomorphic behaviour. Some of the compounds presented liquid crystalline properties, smectic and nematic mesophases. The non-symmetrical compounds allowed for a low emission in the blue region.
ISSN:0267-8292
1366-5855
DOI:10.1080/02678292.2015.1099170