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New patterns of twist-bend liquid crystal phase behaviour: the synthesis and characterisation of the 1-(4-cyanobiphenyl-4′-yl)-10-(4-alkylaniline-benzylidene-4′-oxy)decanes (CB10O·m)

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cris.lastimport.scopus2024-02-12T20:09:38Z
dc.abstract.enThe synthesis and characterisation of the 1-(4-cyanobiphenyl-4′-yl)-10-(4-alkylanilinebenzylidene-4′-oxy)decanes (CB10O·m) are reported. This series shows a rich liquid crystal polymorphism including twist-bend nematic and smectic phases. All the homologues reported exhibit an enantiotropic conventional nematic phase. For the homologues with m ≤ 10, the local packing in the nematic phases and the layer spacing in the smectic phases indicates an intercalated arrangement of the molecules. An intercalated smectic CA phase is observed if m/11 ≈ 0.5. Either side of this condition, the twist-bend nematic phase is observed, a novel pattern of behaviour for a series on increasing a terminal chain length. For longer chain lengths, m = 12, 14, 16 and 18, two twist-bend smectic C (SmCTB) phases are observed, and the packing of the molecules is now of a bilayer-type. The higher temperature variant is termed SmCTB-SH in which SH (single helix) refers to the presence of a short, distorted clock-type helix. In the lower temperature SmCTB-DH phase, an additional longer helix is superimposed on the short one, and DH denotes double helix
dc.affiliationUniwersytet Warszawski
dc.contributor.authorPociecha, Damian
dc.contributor.authorAlshammari, Ahlam F.
dc.contributor.authorStorey, John M. D.
dc.contributor.authorGórecka, Ewa
dc.contributor.authorWalker, Rebecca
dc.contributor.authorCorrie, Imrie T.
dc.contributor.authorImrie, Corrie T.
dc.date.accessioned2024-01-25T13:48:30Z
dc.date.available2024-01-25T13:48:30Z
dc.date.copyright2022-05-30
dc.date.issued2022
dc.description.accesstimeAT_PUBLICATION
dc.description.financePublikacja bezkosztowa
dc.description.number25
dc.description.versionFINAL_PUBLISHED
dc.description.volume18
dc.identifier.doi10.1039/D2SM00162D
dc.identifier.issn1744-683X
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/113608
dc.identifier.weblinkhttp://pubs.rsc.org/en/content/articlepdf/2022/SM/D2SM00162D
dc.languageeng
dc.pbn.affiliationchemical sciences
dc.relation.ispartofSoft Matter
dc.relation.pages4679-4688
dc.rightsCC-BY-NC
dc.sciencecloudnosend
dc.titleNew patterns of twist-bend liquid crystal phase behaviour: the synthesis and characterisation of the 1-(4-cyanobiphenyl-4′-yl)-10-(4-alkylaniline-benzylidene-4′-oxy)decanes (CB10O·m)
dc.typeJournalArticle
dspace.entity.typePublication