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Rewriting the phase diagram of a diamagnetic liquid crystal by a magnetic field

Author

Listed:
  • Fatin Hajjaj

    (Tokyo Institute of Technology)

  • Takashi Kajitani

    (Tokyo Institute of Technology
    RIKEN SPring-8 Center)

  • Hiroyuki Ohsumi

    (RIKEN SPring-8 Center)

  • Yoshikazu Tanaka

    (RIKEN SPring-8 Center)

  • Kenichi Kato

    (RIKEN SPring-8 Center)

  • Masaki Takata

    (RIKEN SPring-8 Center
    Tohoku University)

  • Hideaki Kitazawa

    (National Institute for Materials Science)

  • Taka-hisa Arima

    (The University of Tokyo
    RIKEN Center for Emergent Matter Science (CEMS))

  • Takuzo Aida

    (RIKEN Center for Emergent Matter Science (CEMS)
    The University of Tokyo)

  • Takanori Fukushima

    (Tokyo Institute of Technology)

Abstract

Magnetic fields have been considered to only interact with organic materials non-destructively, leaving their fundamental structures unaffected, even when a strong magnetic field generated from a superconducting magnet is applied. Here we report an unprecedented observation that a liquid-crystalline mesophase of a diamagnetic molecular assembly with an orthorhombic or a cubic structure is formed selectively in the absence or presence of a strong magnetic field. The constituent molecule is a triphenylene derivative carrying six imidazolium bromide-terminated alkyl side chains and exhibits a cubic, orthorhombic, or hexagonal columnar mesophase when complexed with an appropriate amount of lanthanum(III) bromide. Thermal processing of the La3+-containing liquid-crystalline assembly in the presence of a 10-tesla magnetic field resulted in a phase diagram, in which the orthorhombic phase is completely replaced with the cubic phase. The discovery of this magneto-induced phase-selection offers an insight into the interactions between magnetic fields and organic material.

Suggested Citation

  • Fatin Hajjaj & Takashi Kajitani & Hiroyuki Ohsumi & Yoshikazu Tanaka & Kenichi Kato & Masaki Takata & Hideaki Kitazawa & Taka-hisa Arima & Takuzo Aida & Takanori Fukushima, 2018. "Rewriting the phase diagram of a diamagnetic liquid crystal by a magnetic field," Nature Communications, Nature, vol. 9(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-06976-7
    DOI: 10.1038/s41467-018-06976-7
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