Sub-picosecond photoinduced electron transfer in water-soluble porphyrin dimers

F. J. Vergeldt, R. B M Koehorst, T. J. Schaafsma, J. C. Lambry, J. L. Martin, D. G. Johnson, Michael R Wasielewski

Research output: Contribution to journalArticlepeer-review

51 Citations (Scopus)

Abstract

Picosecond as well as femtosecond transient absorption measurements have been performed on eight water-soluble heterodimers consisting of combinations of oppositely charged free base and metal porphyrins which have been electrochemically characterized. The ultrafast non-exponential absorption increase, attributed to solvent-controlled, intradimer charge separation, is energy-gap independent. By contrast, the much slower charge recombination is energy-gap dependent.

Original languageEnglish
Pages (from-to)107-113
Number of pages7
JournalChemical Physics Letters
Volume182
Issue number2
DOIs
Publication statusPublished - Jul 26 1991

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Condensed Matter Physics
  • Atomic and Molecular Physics, and Optics
  • Surfaces and Interfaces

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