Porphyrin and pyropheophorbide phosphorescence in synthetic molecules that mimic photosynthetic triplet energy transfer

A. A. Krasnovsky, M. E. Bashtanov, N. N. Drozdova, P. A. Liddell, A. L. Moore, T. A. Moore, D. Gust

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Phosphorescence emission and excitation spectra and triplet lifetimes at 77 K have been obtained for a carotenoid-porphyrin-pyropheophorbide triad model for the photosynthetic triplet energy transfer relay and seven porphyrin and pyropheophorbide model compounds including methyl pyropheophorbide-a. The results confirm that triplet energy from the pyropheophorbide moiety of the triad is transferred to the carotenoid by a triplet energy relay involving endergonic transfer from the pyropheophorbide to the porphyrin, whose triplet is rapidly quenched by the carotenoid polyene.

Original languageEnglish
Pages (from-to)157-161
Number of pages5
JournalJournal of Photochemistry and Photobiology A: Chemistry
Volume102
Issue number2-3
DOIs
Publication statusPublished - Jan 22 1997

Keywords

  • Phosphorescence
  • Photosynthesis
  • Porphyrin
  • Pyropheophorbide
  • Triplet energy transfer

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Physics and Astronomy(all)

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