Dimer liquid crystals of rod-like molecules containing diynylene and dienylene groups.

DOI
  • Miyata Ryohei
    Department of Applied Chemistry and Bioengineering, Graduate School of Engineering, Osaka City University
  • Shimogaki Tomoyo
    Department of Applied Chemistry and Bioengineering, Graduate School of Engineering, Osaka City University
  • Sato Eriko
    Department of Applied Chemistry and Bioengineering, Graduate School of Engineering, Osaka City University
  • Matsumoto Akikazu
    Department of Applied Chemistry and Bioengineering, Graduate School of Engineering, Osaka City University

Bibliographic Information

Other Title
  • ジイニレンおよびジエニレン基を含む棒状分子のダイマー型液晶

Abstract

The unsaturated carboxylic acid compounds containing diynylene and dienylene groups were synthesized and characterized. Their mesomorphic properties were characterized by differential scanning calorimetry (DSC), polarized optical microscopy (POM), wide-angle X-ray diffractions (XRD) under temperature control. The diacetylene compounds (mPhDA) form hydrogen-bonded dimers, which are further assembled to provide a disc-like mesogen unit. These discotic supramolecular mesogens stack in ordered and disordered columnar structures, producing discotic mesophases. On the other hand, the hydrogen-bonded dimers of the diene compounds (mPhDE, mDE) produced conventional nematic mesophases. The types of the liquid crystalline phases and their temperature ranges depended on the mesogenic structures.

Journal

Keywords

Details 詳細情報について

  • CRID
    1390001205688200576
  • NII Article ID
    130004590481
  • DOI
    10.11538/ekitou.2011.0.114.0
  • ISSN
    24325988
    18803490
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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