Phase transitions of ester-linked cyanobiphenyl dimer homologs and fluorinated analogs

DOI

Bibliographic Information

Other Title
  • エステル結合で連結したシアノビフェニル二量体およびフッ素置換体の相転移挙動

Abstract

<p>Two homologous series of ester-linked cyanobiphenyl dimers (CBCOOnOCOCB) and fluorinated homologs [(2-F)CBCOOnOCOCB)] were synthesized and their phase-transition behavior was evaluated by polarized optical microscopy (POM) and differential scanning calorimetry (DSC). Upon cooling of POM for CBCOOnOCOCB, a nematic (N) phase was observed in the supercooled isotropic (Iso) phase for all n, and the N phase of n = 7, 9, 11 transitioned to a twisted bend nematic (NTB) phase. No liquid crystal phase was observed for (2-F)CBCOOnOCOCB (n = 3 and 5), whereas (2-F)CBCOOnOCOCB (n = 9 and 11) exhibited both the N and NTB phases. Interestingly, (2-F)CBCOO7OCOCB formed the NTB phase from the Iso phase.</p>

Journal

Details 詳細情報について

  • CRID
    1390014813074257408
  • DOI
    10.11538/ekitou.2022.0_pe09
  • ISSN
    24325988
    18803490
  • Text Lang
    ja
  • Data Source
    • JaLC
  • Abstract License Flag
    Disallowed

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