Diphenylthiophenes as central part for the design of bent-core liquid crystalline compounds

New type of bent-core molecules based on the 2,5-diphenylthiophene and 3,4-diphenylthiophene central cores have been synthesized as potential liquid crystalline compounds. We have varied non-linear 2,5-diphenylthiophene molecular core as a potential source of central unit of bent-core mesogens and f...

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Bibliographic Details
Published in:Journal of molecular liquids 2018-10, Vol.267, p.496-503
Main Authors: Bajzíková, Kvetoslava, Veselý, Jiří, Kozmík, Václav, Svoboda, Jiří, Novotná, Vladimíra, Pociecha, Damian
Format: Article
Language:English
Subjects:
Bent-core mesogen
Diphenylthiophene
Lateral substitution
Liquid crystals
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Summary:New type of bent-core molecules based on the 2,5-diphenylthiophene and 3,4-diphenylthiophene central cores have been synthesized as potential liquid crystalline compounds. We have varied non-linear 2,5-diphenylthiophene molecular core as a potential source of central unit of bent-core mesogens and for the first time introduced 3,4-diphenylthiophene central core in the design of V-shaped liquid crystals. Unfortunately, no mesogenicity has been observed for the 3,4-diphenylthiophene-based compounds. The effect of the lateral substitution on the central thiophene in 2,5-diphenylthiophene derivatives has been investigated. We have succeeded in substantial decrease of transition temperatures and the nematic phase has been observed for several compounds. [Display omitted] •Bent-core liquid crystals•Diphenylthiophene•Variation of shape and substitution
ISSN:0167-7322
1873-3166
DOI:10.1016/j.molliq.2018.02.009