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The Role of Substitution in the Apex Position of the Bent-Core on Mesomorphic Properties of New Series of Liquid Crystalline Materials

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dc.abstract.enWe present the synthesis and mesomorphic properties of the new series of bent-core liquid crystals based on 3-hydroxybenzoic acid bearing a lateral substituent in the apex position. Four different substituents of various sizes and electronic properties have been used. We have found that only compounds substituted with fluorine are mesogenic and exhibit one mesophase, whose type differs when prolonging the terminal alkyl chain. For homologues with shorter alkyl chains (octyl, decyl), a columnar B1-type of a mesophase was observed, while materials with longer terminal chains (dodecyl, tetradecyl) exhibited a switchable lamellar SmCAPA phase. Calorimetric measurements, texture observations under a polarizing microscope were performed and electro-optical properties studied. Additionally, dielectric measurements were realized to characterize the molecular dynamics in the SmCAPA phase. All mesogenic compounds were further studied by X-ray measurements to confirm phase identification and obtain more information about their structural parameters. View Full-Text
dc.affiliationUniwersytet Warszawski
dc.contributor.authorŠpaček, Petr
dc.contributor.authorPociecha, Damian
dc.contributor.authorSvoboda, Jiří
dc.contributor.authorKozmík, Václav
dc.contributor.authorSkopalová, Helena
dc.contributor.authorKohout, Michal
dc.contributor.authorNovotná, Vladimíra
dc.date.accessioned2024-01-26T10:47:00Z
dc.date.available2024-01-26T10:47:00Z
dc.date.copyright2020-08-21
dc.date.issued2020
dc.description.accesstimeAT_PUBLICATION
dc.description.financePublikacja bezkosztowa
dc.description.number9
dc.description.versionFINAL_PUBLISHED
dc.description.volume10
dc.identifier.doi10.3390/CRYST10090735
dc.identifier.issn2073-4352
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/123071
dc.identifier.weblinkhttps://www.mdpi.com/2073-4352/10/9/735/pdf
dc.languageeng
dc.pbn.affiliationchemical sciences
dc.relation.ispartofCrystals
dc.relation.pages735
dc.rightsCC-BY
dc.sciencecloudnosend
dc.subject.enBent-core
dc.subject.enColumnar phase
dc.subject.enDielectric spectroscopy
dc.subject.enLiquid crystals
dc.subject.enSwitchable lamellar phase
dc.titleThe Role of Substitution in the Apex Position of the Bent-Core on Mesomorphic Properties of New Series of Liquid Crystalline Materials
dc.typeJournalArticle
dspace.entity.typePublication