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Bent-core liquid crystals based on 6-substituted 3-hydroxybenzoic acid: the role of substitution and linkage group orientation on mesomorphic properties
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SYSNO ASEP 0471345 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Bent-core liquid crystals based on 6-substituted 3-hydroxybenzoic acid: the role of substitution and linkage group orientation on mesomorphic properties Author(s) Tůma, J. (CZ)
Kohout, M. (CZ)
Svoboda, J. (CZ)
Novotná, Vladimíra (FZU-D) RID, ORCID, SAI
Pociecha, D. (PL)Number of authors 5 Source Title Liquid Crystals. - : Taylor & Francis - ISSN 0267-8292
Roč. 43, č. 12 (2016), s. 1889-1900Number of pages 12 s. Language eng - English Country GB - United Kingdom Keywords liquid crystals Subject RIV JJ - Other Materials R&D Projects GA15-02843S GA ČR - Czech Science Foundation (CSF) Institutional support FZU-D - RVO:68378271 UT WOS 000388915700020 EID SCOPUS 84987615831 DOI https://doi.org/10.1080/02678292.2016.1230789 Annotation We have prepared and studied new series of bent-core liquid crystals based on laterally substituted 3-hydroxybenzoic acid. The physical properties of the materials were tuned by the type of lateral substitution in the vicinity of the carboxylic unit. Further modification was achieved by reorientation of connecting ester linkages in the elongating side arms and by changing the length of terminal alkyl chains. The physical properties of the materials were determined by differential scanning calorimetry (DSC), polarising optical microscopy and for selected compounds by x-ray diffraction analysis. The introduction of fluorine as lateral substituent leads to the appearance of a lamellar or columnar mesophase. On contrary, methyl- or chlorine-substituted compounds are mostly crystalline. We have found a strong correlation between the size of the lateral substituent and the mesogenicity of the studied materials. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2017
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