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The Chiral Twist-Bend Nematic Phase (N*TB)

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dc.abstract.enThe twist-bend nematic, NTB, phase has been observed for chiral materials in which chirality is introduced through a branched 2-methylbutyl terminal tail. The chiral twist-bend nematic phase, N*TB, is completely miscible with the NTB phase of the standard achiral material, CB6OCB. The N*TB phase exhibits optical textures with lower birefringence than those observed for the achiral NTB phase, suggesting an additional mechanism of averaging molecular orientations. The N*@N*TB transition temperatures for the chiral materials are higher than the NTB @N transition temperatures seen for the corresponding racemic materials. This suggests the double egeneracy of helical twist sense in the N* TB phase is removed by the intrinsic molecular chirality. A square lattice pattern is observed in the N* phase over a temperature range of several degrees above the N*TB–N phase transition, which may be attributed to a non-monotonic dependence of the bend elastic constant.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorPociecha, Damian
dc.contributor.authorGórecka, Ewa
dc.contributor.authorStorey, John M. D.
dc.contributor.authorWalker, Rebecca
dc.contributor.authorImrie, Corrie T.
dc.date.accessioned2024-01-26T09:59:05Z
dc.date.available2024-01-26T09:59:05Z
dc.date.issued2019
dc.description.financeNie dotyczy
dc.description.number58
dc.description.volume25
dc.identifier.doi10.1002/CHEM.201903014
dc.identifier.issn0947-6539
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/121987
dc.languageeng
dc.pbn.affiliationchemical sciences
dc.relation.ispartofChemistry : a European Journal
dc.relation.pages13329-13335
dc.rightsClosedAccess
dc.sciencecloudnosend
dc.titleThe Chiral Twist-Bend Nematic Phase (N*TB)
dc.typeJournalArticle
dspace.entity.typePublication