Controlling spontaneous chirality in achiral materials: liquid crystal oligomers and the heliconical twist-bend nematic phase

M. M. Majewska*, E. Forsyth, D. Pociecha, C. Wang, J. M. D. Storey, C. T. Imrie, E. Gorecka

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

Liquid crystal oligomers, namely dimers, trimers and tetramers, consisting of cyanobiphenyl and benzylideneaniline-based mesogenic units connected by either linear or bent alkoxy or alkyl spacers are reported. These materials, although built from achiral molecules, show the spontaneously chiral heliconical twist-bend nematic (N-TB) phase. We report the relationships between the shape of the oligomer, and the N-TB phase stability, the temperature dependence of the helical pitch length and tilt angle, birefringence, and elastic constants.

Original languageEnglish
Pages (from-to)5285-5288
Number of pages4
JournalChemical Communications
Volume58
Issue number34
Early online date10 Apr 2022
DOIs
Publication statusPublished - 26 Apr 2022

Keywords

  • SYMMETRY-BREAKING
  • TRIMERS
  • DIMERS

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