PA19 Does the Biaxial Nematic Exist in Bent-Core Mesogens?

  • Miyake I.
    Department of Organic and Polymeric Materials, Tokyo Institute of Technology
  • Nakata M.
    Department of Organic and Polymeric Materials, Tokyo Institute of Technology
  • Takanishi Y.
    Department of Organic and Polymeric Materials, Tokyo Institute of Technology
  • Ishikawa K.
    Department of Organic and Polymeric Materials, Tokyo Institute of Technology
  • Watanabe J.
    Department of Organic and Polymeric Materials, Tokyo Institute of Technology
  • Takezoe H.
    Department of Organic and Polymeric Materials, Tokyo Institute of Technology
  • Lee C. H.
    Chemical Resources Laboratory, Tokyo Institute of Technology
  • Yamamoto T.
    Chemical Resources Laboratory, Tokyo Institute of Technology

Bibliographic Information

Other Title
  • PA19 屈曲型液晶分子のネマチック相における二軸性の可能性(物理・物性)

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Description

If the bent-core molecules exhibit nematic phases, they could have biaxiality due to their molecular shapes. Recently a liquid crystal material containing a thiazole unit as a central core was synthesized and found to exhibit an interesting nematic phase. Under an optical microscope, the Schlieren textures were observed in the nematic phase of a homeotropically aligned cell. In the nematic phase range, we observed a spontaneous orientational change associated with characteristic texture changes, which may provide the information of the nature of the nematic phase. Two reflections were observed at a small angle corresponding to a layer periodicity even in the nematic phase, suggesting the existence of a cybotactic formation of the layer structure. In aligned samples, each peak splits into two. Based on these experimental observations, the possible existence of the biaxial nematic phase will be discussed.

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Details 詳細情報について

  • CRID
    1390282680664164736
  • NII Article ID
    110001482085
  • DOI
    10.11538/ekitou.2002.0_317
  • ISSN
    24325988
    18803490
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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