EPR study of the polydomain structure of the twist-bend nematic phase of CB9CB in the bulk

ABSTRACT EPR spin probe spectra of the liquid crystal phases exhibited, in the bulk, by the 1″,9″-bis(4-cyanobiphenyl-4’-yl)nonane (CB9CB) bent-shape dimer showed that, on cooling from the isotropic phase, this material forms a uniaxial nematic phase with a uniform director macroscopically aligned along the spectrometer field. Upon further cooling, a transition into the twist-bend nematic phase is observed after a biphasic region of approximately 4 K. In this lower temperature nematic phase, the director does not appear to be macroscopically aligned. The non-uniform director distribution is modelled as a collection of monodomains tilted with respect to the magnetic field and orientationally distributed around the tilt direction. Graphical Abstract

• Publication year

  2018

• Venue

  Liquid crystals (Print)

• Publication date

  2018-08-02

• Fields of study

  Materials Science, Physics

• Identifiers
  DOI 10.1080/02678292.2018.1501110
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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