Photoinduced charge transfer between CdSe nanocrystal quantum dots and Ru-polypyridine complexes

Milan Sykora, Melissa A. Petruska, James Alstrum-Acevedo, Ilya Bezel, Thomas J. Meyer, Victor I. Klimov

Research output: Contribution to journalArticlepeer-review

205 Citations (Scopus)


In this communication, we demonstrate a new approach to sensitization of Ru-polypyridine complexes by using semiconductor nanocrystal quantum dots (NQDs). When mixed in solution, the complexes functionalized by carboxylic groups adsorb onto the surface of the NQDs. Excitation of NQDs by 400 nm light leads to fast, 5 ps hole transfer from the photoexcited NQDs to the surface-adsorbed complexes. This result indicates that Ru complexes can be sensitized by CdSe NQDs, which opens interesting opportunities for designing new types of photocatalytic materials for solar energy conversion applications. These materials will take advantage of broad size-controlled absorption spectra and large extinction coefficients of NQDs as well as the unique property of NQDs to respond to absorption of a single photon by producing multiple electron-hole pairs.

Original languageEnglish
Pages (from-to)9984-9985
Number of pages2
JournalJournal of the American Chemical Society
Issue number31
Publication statusPublished - Aug 9 2006

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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