Ultrafast excitation energy transfer and exciton. Exciton annihilation processes in isolated light harvesting complexes of photosystem II (LHC II) from spinach

T. Bittner, K. D. Irrgang, G. Renger, M. R. Wasielewski

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95 Citations (Scopus)

Abstract

Excitation energy transfer and exciton-exciton annihilation in the isolated light-harvesting chlorophyll alb protein complex of spinach photosystem II (LHC II) has been studied by two-color absorption difference spectroscopy with femtosecond time resolution. The kinetic curves of the transient absorption changes at 680 nm show a remarkable intensity dependence which is ascribed to exciton-exciton annihilation. It is concluded that annihilation processes preferably occur among excited singlet states of Chl a molecules.

Original languageEnglish
Pages (from-to)11821-11826
Number of pages6
JournalJournal of physical chemistry
Volume98
Issue number46
DOIs
Publication statusPublished - Jan 1 1994

ASJC Scopus subject areas

  • Engineering(all)
  • Physical and Theoretical Chemistry

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