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Photoinduced Intrarotaxane Electron Transfer between Zinc Porphyrin and [60]Fullerene in Benzonitrile

Authors

  • Nobuhiro Watanabe,

    1. Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Sakai-shi, Osaka 599-8531, Japan, Fax: (+81) 72-254-9910
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  • Nobuhiro Kihara Dr.,

    1. Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Sakai-shi, Osaka 599-8531, Japan, Fax: (+81) 72-254-9910
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  • Yoshio Furusho Dr.,

    1. Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Sakai-shi, Osaka 599-8531, Japan, Fax: (+81) 72-254-9910
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  • Toshikazu Takata Prof. Dr.,

    1. Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Sakai-shi, Osaka 599-8531, Japan, Fax: (+81) 72-254-9910
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  • Yasuyuki Araki Dr.,

    1. Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, CREST (JST), Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan, Fax: (+81) 22-217-5608
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  • Osamu Ito Prof. Dr.

    1. Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, CREST (JST), Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan, Fax: (+81) 22-217-5608
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  • This work was partly supported by the Priority-Area-Research by the Ministry of Education, Science, Technology, Sports and Culture of Japan and by JSPS Research Fellowships for Young Scientists (N.W.) which is greatly acknowledged.

Abstract

original image

A through-space superexchange mechanism appears to be responsible for charge recombination (CR) following photoexcitation and charge separation (CS) in rotaxanes containing zinc porphyrin and C60 moieties (see picture), as suggested by the low activation energy of this process. Furthermore, the charge-separated state is relatively long-lived.

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