MIMICRY OF CAROTENOID FUNCTION IN PHOTOSYNTHESIS: SYNTHESIS AND PHOTOPHYSICAL PROPERTIES OF A CAROTENOPYROPHEOPHORBIDE

Paul A. Liddeli, Gregory A. Nemeth, William R. Lehman, Anna M. Joy, Ana Moore, René V. Bensasson, Thomas Moore, Devens Gust

Research output: Contribution to journalArticle

31 Scopus citations

Abstract

Abstract— A new molecule consisting of a carotenoid polyene covalently linked to a pyropheophorbide has been prepared. This molecule exists in solution in an extended conformation with the carotenoid moiety relatively far from the tetrapyrrole π‐electron system. The compound shows negligible antenna function (singlet energy transfer from carotenoid to pyropheophorbide), but substantial photoprotection from singlet oxygen production (due to rapid triplet energy transfer from pyropheophorbide to carotenoid). The photochemical properties of this molecule parallel those of conformationally similar carotenoporphyrins. Thus, carotenoporphyrins appear to be valid synthetic systems for modeling in vivo carotenoid‐chlorophyll interactions.

Original languageEnglish (US)
Pages (from-to)641-645
Number of pages5
JournalPhotochemistry and photobiology
Volume36
Issue number6
DOIs
StatePublished - Dec 1982

ASJC Scopus subject areas

  • Biochemistry
  • Physical and Theoretical Chemistry

Fingerprint Dive into the research topics of 'MIMICRY OF CAROTENOID FUNCTION IN PHOTOSYNTHESIS: SYNTHESIS AND PHOTOPHYSICAL PROPERTIES OF A CAROTENOPYROPHEOPHORBIDE'. Together they form a unique fingerprint.

  • Cite this