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Fluorescence depolarization dynamics in the B850 complex of purple bacteria

Kuhn, O; Sundström, Villy LU and Pullerits, Tönu LU (2002) In Chemical Physics 275(1-3). p.15-30
Abstract
The fluorescence anisotropic decay is modeled for the B850 bacteriochlorophyll a complex of the purple bacterium Rhodopseudomonas acidophila. Structural information is combined with experimental data to derive a Hamilton operator which models the S-0-S-1 excitation energy transfer between the pigments as well as the energy dissipation into the protein environment. The time-resolved fluorescence signal is determined from the solutions of the equations of motion for the one-exciton density matrix. Nonsecular terms in the Redfield relaxation tensor are shown to have a dramatic influence on the calculated time scales for depolarization.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Chemical Physics
volume
275
issue
1-3
pages
15 - 30
publisher
Elsevier
external identifiers
  • wos:000173257000003
  • scopus:0036142391
ISSN
0301-0104
DOI
10.1016/S0301-0104(01)00526-2
language
English
LU publication?
yes
id
a35998d5-a95d-40b0-b607-b255d7f82c8a (old id 345925)
date added to LUP
2007-11-05 13:11:14
date last changed
2017-01-01 07:23:44
@article{a35998d5-a95d-40b0-b607-b255d7f82c8a,
  abstract     = {The fluorescence anisotropic decay is modeled for the B850 bacteriochlorophyll a complex of the purple bacterium Rhodopseudomonas acidophila. Structural information is combined with experimental data to derive a Hamilton operator which models the S-0-S-1 excitation energy transfer between the pigments as well as the energy dissipation into the protein environment. The time-resolved fluorescence signal is determined from the solutions of the equations of motion for the one-exciton density matrix. Nonsecular terms in the Redfield relaxation tensor are shown to have a dramatic influence on the calculated time scales for depolarization.},
  author       = {Kuhn, O and Sundström, Villy and Pullerits, Tönu},
  issn         = {0301-0104},
  language     = {eng},
  number       = {1-3},
  pages        = {15--30},
  publisher    = {Elsevier},
  series       = {Chemical Physics},
  title        = {Fluorescence depolarization dynamics in the B850 complex of purple bacteria},
  url          = {http://dx.doi.org/10.1016/S0301-0104(01)00526-2},
  volume       = {275},
  year         = {2002},
}