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Mixed-Valence Nanoclusters: Fast Electron Transfer in Mixed-Valence Systems with a Gold Nanoparticle as the Bridge

Authors

  • Gabriele Canzi,

    1. Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093, USA Fax: (+1) 858-822-2665
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  • Clifford P. Kubiak

    Corresponding author
    1. Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093, USA Fax: (+1) 858-822-2665
    • Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093, USA Fax: (+1) 858-822-2665.
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  • Dedicated to Chad Mirkin in celebration of 20 years of influential research at Northwestern University

Abstract

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Trinuclear ruthenium clusters attached to Au nanoparticles can be partially reduced to form mixed-valence nanoclusters. The nanoparticles are synthesized using a modified Brust method. IR-SEC shows dynamic coalescence of the stretching vibrations of the carbonyls, ν(CO), indicating the electron transfer between Ru clusters attached via a π-conjugated bridge to NPs occurs on the picosecond timescale. Simulation of IR spectra gives ket on the order of 1011 s−1.

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