Persistent photoinduced electron transfer from functionalized dendrimers to Buckminsterfullerene

Authors

  • Dr. René A. J. Janssen,

    1. Laboratory of Organic Chemistry Eindhoven University of Technology P.O. Box 513, 5600 MB Eindhoven (The Netherlands)
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  • Dr. Johan F. G. A. Jansen,

    1. Laboratory of Organic Chemistry Eindhoven University of Technology P.O. Box 513, 5600 MB Eindhoven (The Netherlands)
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  • John A. E. H. van Haare,

    1. Laboratory of Organic Chemistry Eindhoven University of Technology P.O. Box 513, 5600 MB Eindhoven (The Netherlands)
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  • Prof. E. W. Meijer

    Corresponding author
    1. Laboratory of Organic Chemistry Eindhoven University of Technology P.O. Box 513, 5600 MB Eindhoven (The Netherlands)
    • Laboratory of Organic Chemistry Eindhoven University of Technology P.O. Box 513, 5600 MB Eindhoven (The Netherlands)
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  • DSM Research and Philips Research are gratefully acknowledged for unrestricted research grants.

Abstract

Functionalized poly(propylene imine) dendrimers are efficient electron donors in photoinduced electron transfer reactions to Buckminsterfullerene in solution. The photoinduced electron transfer reaction produces persistent fullerene radical anions at room temperature even with light switched off, as evidenced from ESR spectroscopy. The reaction exhibits a remarkable size-effect: persistent electron transfer is observed only for dendrimer generations G ≥ 2.

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