Advertisement

Femtosecond Dynamics Within the B820 Dimeric Subunit from the Core Antenna Complex of Rs. rubrum

  • R. Kumble
  • S. Palese
  • R. W. Visschers
  • P. L. Dutton
  • R. M. Hochstrasser
Conference paper
Part of the Springer Series in Chemical Physics book series (CHEMICAL, volume 62)

Abstract

Femtosecond pump-probe measurements at room temperature reveal coherent nuclear motion and ultrafast depolarization within the dimeric subunit of a bacterial light-harvesting complex, and spectral evolution within the re-assembled aggregate. The results establish a sub-50 fs timescale for dephasing between dimer exciton levels and support a stochastic hopping model for energy transfer within antenna complexes.

Keywords

Transient Absorption Antenna Complex Spectral Evolution Exciton Level Biphasic Decay 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

References

  1. [1]
    Van Grondelle, R.; Dekker, J. P.; Gillbro, T.; Sundstrom, V. Biochim. Biophys. Acta 1994, 1187, 1Google Scholar
  2. [2]
    Wynne, K.; Hochstrasser, R. M. J. Raman Spectrosc. 1995, 26, 561.CrossRefADSGoogle Scholar
  3. [3]
    Bradforth, S. E.; Jimenez, R.; van Mourik, F.; van Grondelle, R.; Fleming, G. R. J. Phys. Chem. 1995, 99, 16179.CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1996

Authors and Affiliations

  • R. Kumble
    • 1
  • S. Palese
    • 1
  • R. W. Visschers
    • 2
  • P. L. Dutton
    • 2
  • R. M. Hochstrasser
    • 1
  1. 1.Department of ChemistryUniversity of PennsylvaniaPhiladelphiaUSA
  2. 2.The Johnson Foundation for Molecular BiophysicsUniversity of PennsylvaniaPhiladelphiaUSA

Personalised recommendations