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, Ana L Moore, Thomas A Moore, John Devens Gust

Research output: Contribution to journalArticle

12 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
Publication statusPublished - Jan 22 1997

Fingerprint

Phosphorescence
carotenoids
Porphyrins
Carotenoids
phosphorescence
porphyrins
Energy transfer
energy transfer
relay
Molecules
methyl compounds
Polyenes
molecules
emission spectra
life (durability)
energy
excitation

Keywords

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

ASJC Scopus subject areas

  • Bioengineering
  • Physical and Theoretical Chemistry

Cite this

Porphyrin and pyropheophorbide phosphorescence in synthetic molecules that mimic photosynthetic triplet energy transfer. / Krasnovsky, A. A.; Bashtanov, M. E.; Drozdova, N. N.; Liddell, P. A.; Moore, Ana L; Moore, Thomas A; Gust, John Devens.

In: Journal of Photochemistry and Photobiology A: Chemistry, Vol. 102, No. 2-3, 22.01.1997, p. 157-161.

Research output: Contribution to journalArticle

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AU - Bashtanov, M. E.

AU - Drozdova, N. N.

AU - Liddell, P. A.

AU - Moore, Ana L

AU - Moore, Thomas A

AU - Gust, John Devens

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AB - 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.

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