Organoplatinum(II) complexes with chromophore-acceptor dyad studied by ultrafast time-resolved absorption spectroscopy

Siu Wai Lai, Yong Chen, Wai Ming Kwok, Xi Juan Zhao, Wai Pong To, Wen Fu Fu, Chi Ming Che

Research output: Journal article publicationJournal articleAcademic researchpeer-review

12 Citations (Scopus)

Abstract

The photoinduced ET reaction from PtIIchromophore to viologen acceptor in a new ultrafast time-resolved absorption spectroscopy has been reported. Photoinduced electron-transfer (ET) reactions are fundamental steps in photosynthesis, and which have led to extensive investigations into charge-separated species in artificial mimics. The development of the absorption maxima at 395 and 605 nm could be attributed to the formation of methyl viologen radical cation as a result of oxidative decomposition of TEOA. The back ET reaction rate constants of the two platinum (II) systems are slower than the forward electron-transfer reactions, despite the large driving force. Efforts to harness the slow back ET reactions of PtIIchromophore acceptor systems for light-induced multi-electron-transfer catalysis are in progress.
Original languageEnglish
Pages (from-to)60-65
Number of pages6
JournalChemistry - An Asian Journal
Volume5
Issue number1
DOIs
Publication statusPublished - 4 Jan 2010

Keywords

  • Chromophores
  • Electron transfer
  • Hydrogen
  • Platinum
  • Viologen

ASJC Scopus subject areas

  • Chemistry(all)

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