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Light-melt adhesive based on dynamic carbon frameworks in a columnar liquid-crystal phase

Author

Listed:
  • Shohei Saito

    (Graduate School of Science, Kyoto University
    PRESTO, Japan Science and Technology Agency)

  • Shunpei Nobusue

    (Graduate School of Science, Nagoya University
    Present address: Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, Osaka 560-8531, Japan)

  • Eri Tsuzaka

    (Graduate School of Science, Nagoya University)

  • Chunxue Yuan

    (Graduate School of Science, Nagoya University
    Present address: College of Materials Science and Engineering, Tongji University, Shanghai 201804, China)

  • Chigusa Mori

    (Graduate School of Science, Nagoya University)

  • Mitsuo Hara

    (Graduate School of Engineering, Nagoya University)

  • Takahiro Seki

    (Graduate School of Engineering, Nagoya University)

  • Cristopher Camacho

    (Graduate School of Science, Nagoya University
    School of Chemistry, University of Costa Rica, San Pedro Montes de Oca)

  • Stephan Irle

    (Graduate School of Science, Nagoya University
    Institute of Transformative Bio-Molecules, Nagoya University)

  • Shigehiro Yamaguchi

    (Graduate School of Science, Nagoya University
    Institute of Transformative Bio-Molecules, Nagoya University)

Abstract

Liquid crystal (LC) provides a suitable platform to exploit structural motions of molecules in a condensed phase. Amplification of the structural changes enables a variety of technologies not only in LC displays but also in other applications. Until very recently, however, a practical use of LCs for removable adhesives has not been explored, although a spontaneous disorganization of LC materials can be easily triggered by light-induced isomerization of photoactive components. The difficulty of such application derives from the requirements for simultaneous implementation of sufficient bonding strength and its rapid disappearance by photoirradiation. Here we report a dynamic molecular LC material that meets these requirements. Columnar-stacked V-shaped carbon frameworks display sufficient bonding strength even during heating conditions, while its bonding ability is immediately lost by a light-induced self-melting function. The light-melt adhesive is reusable and its fluorescence colour reversibly changes during the cycle, visualizing the bonding/nonbonding phases of the adhesive.

Suggested Citation

  • Shohei Saito & Shunpei Nobusue & Eri Tsuzaka & Chunxue Yuan & Chigusa Mori & Mitsuo Hara & Takahiro Seki & Cristopher Camacho & Stephan Irle & Shigehiro Yamaguchi, 2016. "Light-melt adhesive based on dynamic carbon frameworks in a columnar liquid-crystal phase," Nature Communications, Nature, vol. 7(1), pages 1-7, November.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms12094
    DOI: 10.1038/ncomms12094
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