Photoinduced electron transfer in a hexaphenylbenzene-based self-assembled porphyrin-fullerene triad

Yuichi Terazono, Gerdenis Kodis, Paul A. Liddell, Vikas Garg, Miguel Gervaldo, Thomas A. Moore, Ana L. Moore, Devens Gust

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

A hexaphenylbenzene-based zinc porphyrin dyad forms a 1:1 complex with a fullerene bearing two pyridyl groups via coordination of the pyridyl nitrogens with the zinc atoms. The fullerene is symmetrically located between the two zinc porphyrins. The binding constant for the complex is 7.3 × 104 M-1 in 1,2-difluorobenzene. Photoinduced electron transfer from a porphyrin first excited singlet state to the fullerene occurs with a time constant of 3 ps, and the resulting charge-separated state has a lifetime of 230 ps. This self-assembled construct should form a basis for the construction of more elaborate model photosynthetic antenna-reaction center systems.

Original languageEnglish
Pages (from-to)464-469
Number of pages6
JournalPhotochemistry and Photobiology
Volume83
Issue number2
DOIs
Publication statusPublished - Mar 2007

ASJC Scopus subject areas

  • Biochemistry
  • Physical and Theoretical Chemistry

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