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A Polymacrocyclic Oligoarylamine with a Pseudobeltane Motif: Towards a Cylindrical Multispin System

Authors

  • Daisuke Sakamaki,

    1. Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510 (Japan)
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  • Dr. Akihiro Ito,

    Corresponding author
    1. Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510 (Japan)
    • Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510 (Japan)
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  • Dr. Ko Furukawa,

    1. Institute for Molecular Science, Myodaiji, Okazaki 444-8585 (Japan)
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  • Prof. Dr. Tatsuhisa Kato,

    1. Institute for the Promotion of Excellence in Higher Education, Kyoto University, Yoshida-Nihonmatsu, Sakyo-ku, Kyoto 606-8501 (Japan)
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  • Dr. Motoo Shiro,

    1. Rigaku Corporation, X-ray Research Laboratory, Matsubaracho 3-9-12, Akishima, Tokyo, 196-8666 (Japan)
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  • Prof. Dr. Kazuyoshi Tanaka

    Corresponding author
    1. Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510 (Japan)
    • Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510 (Japan)
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  • This work was supported by a Grant-in-Aid for Scientific Research (B) (24310090) from the Japan Society for the Promotion of Science (JSPS). D.S. thanks the JSPS Research Fellowship for Young Scientists.

Abstract

original image

Spin doctor: The polymacrocyclic oligoarylamine in the picture serves as a multispin source owing to its multi-electron redox activity. As a result of its pseudobeltane structure and para-phenylenediamine bridges, the radical cation can convert between two sideslipped structures with a windshield-wiper-like motion. In contrast, the tetraazacyclophane units are rigid components in the polymacrocycle.

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