Energy migration and exciton trapping in green plant photosynthesis

Nicholas E. Geacintov, Jacques Breton, Robert S. Knox

Research output: Contribution to journalArticlepeer-review


The possible origins of the different fluorescence decay components in green plants are discussed in terms of a random walk and Butler's bipartite model. The interaction of the excitations with the photosystem II reaction centers and, specifically, the regeneration of theses excitations by charge recombination within the reaction centers, are considered. Based on comparisons between fluorescence decay profiles, time-dependent exciton annihilation and photoelectric phenomena, it appears that the fast 200 ps decay component corresponds to primary energy transport from the antenna to the reaction centers and is dominant in filling the photosystem II reaction centers.

Original languageEnglish (US)
Pages (from-to)233-242
Number of pages10
JournalPhotosynthesis Research
Issue number3
StatePublished - Jan 1986


  • charge recombination and fluorescence
  • chloroplasts
  • fluorescence decay components
  • reaction centers

ASJC Scopus subject areas

  • Biochemistry
  • Plant Science
  • Cell Biology


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