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Design of Flexible Lewis Acidic Sites in Porous Coordination Polymers by using the Viologen Moiety

Authors

  • Dr. Masakazu Higuchi,

    1. Institute for Integrated Cell-Material Sciences, Kyoto University, 69 Konoe-cho, Yoshida, Sakyo-ku, Kyoto 606-8501 (Japan)
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  • Kohei Nakamura,

    1. Department of Synthetic Chemistry & Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510 (Japan)
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  • Dr. Satoshi Horike,

    1. Department of Synthetic Chemistry & Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510 (Japan)
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  • Dr. Yuh Hijikata,

    1. Department of Synthetic Chemistry & Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510 (Japan)
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  • Dr. Nobuhiro Yanai,

    1. Department of Synthetic Chemistry & Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510 (Japan)
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  • Tomohiro Fukushima,

    1. Department of Synthetic Chemistry & Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510 (Japan)
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  • Dr. Jungeun Kim,

    1. Japan Synchrotron Radiation Research Institute, RIKEN, 1-1-1, Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198 (Japan)
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  • Dr. Kenichi Kato,

    1. Spring-8 Center, RIKEN, 1-1-1, Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148 (Japan)
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  • Prof. Dr. Masaki Takata,

    1. Japan Synchrotron Radiation Research Institute, RIKEN, 1-1-1, Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198 (Japan)
    2. Spring-8 Center, RIKEN, 1-1-1, Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148 (Japan)
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  • Daisuke Watanabe,

    1. Hydrogen & New Energy Research Laboratory, Research & Development Division, JX Nippon Oil & Energy Corporation, 8, Chidoricho, Naka-ku, Yokohama 231-0815 (Japan)
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  • Shinji Oshima,

    1. Hydrogen & New Energy Research Laboratory, Research & Development Division, JX Nippon Oil & Energy Corporation, 8, Chidoricho, Naka-ku, Yokohama 231-0815 (Japan)
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  • Prof. Dr. Susumu Kitagawa

    Corresponding author
    1. Institute for Integrated Cell-Material Sciences, Kyoto University, 69 Konoe-cho, Yoshida, Sakyo-ku, Kyoto 606-8501 (Japan)
    2. Department of Synthetic Chemistry & Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510 (Japan)
    • Institute for Integrated Cell-Material Sciences, Kyoto University, 69 Konoe-cho, Yoshida, Sakyo-ku, Kyoto 606-8501 (Japan)
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  • The synchrotron radiation experiments were performed at the BL44B2 in the SPring-8 with the approval of the RIKEN (Proposal No. 20090066). This work was supported by the JX Nippon Oil & Energy Corporation, ERATO “Kitagawa Integrated Pores Project” of the Japan Science and Technology Agency (JST), and the New Energy and Industrial Technology Development Organization (NEDO).

Abstract

original image

Charged up: A novel porous coordination polymer with a charged organic surface (COS) comprising a zwitterionic organic linker, viologen, has been synthesized. The COS shows strong Lewis acidity accompanied with flexibility, and the isosteric heat of H2 adsorption is 9.5 kJ mol−1, which is comparable to that of open metal sites (OMSs).

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