A Ruthenium Complex–Porphyrin–Fullerene-Linked Molecular Pentad as an Integrative Photosynthetic Model

Masanori Yamamoto, Jens Föhlinger, Jonas Petersson, Leif Hammarström, Hiroshi Imahori

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

A ruthenium complex, porphyrin sensitizer, fullerene acceptor molecular pentad has been synthesized and a long-lived hole–electron pair was achieved in aqueous solution by photoinduced multistep electron transfer: Upon irradiation by visible light, the excited-state of a zinc porphyrin (1ZnP*) was quenched by fullerene (C60) to afford a radical ion pair, 1,3(ZnP.+-C60 .−). This was followed by the subsequent electron transfer from a water oxidation catalyst unit (RuII) to ZnP.+ to give the long-lived charge-separated state, RuIII-ZnP-C60 .−, with a lifetime of 14 μs. The ZnP worked as a visible-light-harvesting antenna, while the C60 acted as an excellent electron acceptor. As a consequence, visible-light-driven water oxidation by this integrated photosynthetic model compound was achieved in the presence of sacrificial oxidant and redox mediator.

Original languageEnglish
Pages (from-to)3329-3333
Number of pages5
JournalAngewandte Chemie - International Edition
Volume56
Issue number12
DOIs
Publication statusPublished - Mar 13 2017

Keywords

  • artificial photosynthesis
  • fullerenes
  • molecular pentads
  • photoinduced electron transfer
  • porphyrins
  • ruthenium

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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