A Bevel-Gear-Shaped Rotor Bearing a Double-Decker Porphyrin Complex

Authors

  • Soichiro Ogi,

    1. Macromolecules Group, Organic Nanomaterials Center, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047 (Japan), Fax: (+81) 29-859-2101
    2. Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395 (Japan), Fax: (+81) 92-802-6990
    3. Department of Materials Science and Engineering, Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571 (Japan)
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  • Tomohiro Ikeda Dr.,

    1. Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395 (Japan), Fax: (+81) 92-802-6990
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  • Rie Wakabayashi Dr.,

    1. Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395 (Japan), Fax: (+81) 92-802-6990
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  • Seiji Shinkai Prof.,

    1. Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395 (Japan), Fax: (+81) 92-802-6990
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  • Masayuki Takeuchi Dr.

    1. Macromolecules Group, Organic Nanomaterials Center, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047 (Japan), Fax: (+81) 29-859-2101
    2. Department of Materials Science and Engineering, Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571 (Japan)
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Abstract

original image

Supramolecular rotor: The interlocking of two porphyrin-based molecular rotors into a bevel-gear-shaped structure is demonstrated (see figure). The mechanical interactions between the teeth of the two porphyrin rotors enabled them to mesh and rotate with almost identical activation energies. Switching the rotational activities of one rotor by using chemical stimulation induced a change in the cooperative rotational motions of both rotors.

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