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A light-induced spin crossover actuated single-chain magnet

Author

Listed:
  • Tao Liu

    (State Key Laboratory of Fine Chemicals, Dalian University of Technology)

  • Hui Zheng

    (State Key Laboratory of Fine Chemicals, Dalian University of Technology)

  • Soonchul Kang

    (Institute for Materials Chemistry and Engineering, Kyushu University)

  • Yoshihito Shiota

    (Institute for Materials Chemistry and Engineering, Kyushu University)

  • Shinya Hayami

    (Graduate School of Science and Technology, Kumamoto University)

  • Masaki Mito

    (Faculty of Engineering, Kyushu Institute of Technology)

  • Osamu Sato

    (Institute for Materials Chemistry and Engineering, Kyushu University)

  • Kazunari Yoshizawa

    (Institute for Materials Chemistry and Engineering, Kyushu University)

  • Shinji Kanegawa

    (Institute for Materials Chemistry and Engineering, Kyushu University)

  • Chunying Duan

    (State Key Laboratory of Fine Chemicals, Dalian University of Technology)

Abstract

Both spin-crossover complexes and molecular nanomagnets display bistable magnetic states, potentially behaving as elementary binary units for information storage. It is a challenge to introduce spin-crossover units into molecular nanomagnets to switch the bistable state of the nanomagnets through external stimuli-tuned spin crossover. Here we report an iron(II) spin-crossover unit and paramagnetic iron(III) ions that are incorporated into a well-isolated double-zigzag chain. The chain exhibits thermally induced reversible spin-crossover and light-induced excited spin-state trapping at the iron(II) sites. Single-chain magnet behaviour is actuated accompanying the synergy between light-induced excited spin-state trapping at the iron(II) sites and ferromagnetic interactions between the photoinduced high-spin iron(II) and low-spin iron(III) ions in the chain. The result provides a strategy to switch the bistable state of molecular nanomagnets using external stimuli such as light and heat, with the potential to erase and write information at a molecular level.

Suggested Citation

  • Tao Liu & Hui Zheng & Soonchul Kang & Yoshihito Shiota & Shinya Hayami & Masaki Mito & Osamu Sato & Kazunari Yoshizawa & Shinji Kanegawa & Chunying Duan, 2013. "A light-induced spin crossover actuated single-chain magnet," Nature Communications, Nature, vol. 4(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:4:y:2013:i:1:d:10.1038_ncomms3826
    DOI: 10.1038/ncomms3826
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