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Microscopic theory of exciton annihilation : Application to the LH2 antenna system

Brüggemann, Ben LU ; Herek, Jennifer L. LU ; Sundström, Villy LU ; Pullerits, Tõnu LU and May, Volkhard (2001) In Journal of Physical Chemistry B 105(46). p.11391-11394
Abstract

The multiexciton density matrix theory is utilized to achieve a microscopic description of exciton-exciton annihilation (EEA). We apply the theory to the 18 bacteriochlorophyll (BChl) molecules of the B850 ring of the light-harvesting complex LH2 of Rhodobacter sphaeroides. The simulation of the EEA process reproduces the intensity-dependent transient absorption kinetic experiments very well, and insight is obtained on microscopic parameters such as the internal conversion rate of BChl in LH2. The exciton dynamics and the different relaxation processes are visualized by constructing a multiexciton spectrogram.

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author
; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Physical Chemistry B
volume
105
issue
46
pages
4 pages
publisher
The American Chemical Society (ACS)
external identifiers
  • scopus:0035936203
ISSN
1089-5647
DOI
10.1021/jp012072y
language
English
LU publication?
yes
id
18a3a551-bdf3-4bf9-b390-90d8f87ca475
date added to LUP
2025-10-28 16:34:55
date last changed
2025-11-19 10:11:58
@article{18a3a551-bdf3-4bf9-b390-90d8f87ca475,
  abstract     = {{<p>The multiexciton density matrix theory is utilized to achieve a microscopic description of exciton-exciton annihilation (EEA). We apply the theory to the 18 bacteriochlorophyll (BChl) molecules of the B850 ring of the light-harvesting complex LH2 of Rhodobacter sphaeroides. The simulation of the EEA process reproduces the intensity-dependent transient absorption kinetic experiments very well, and insight is obtained on microscopic parameters such as the internal conversion rate of BChl in LH2. The exciton dynamics and the different relaxation processes are visualized by constructing a multiexciton spectrogram.</p>}},
  author       = {{Brüggemann, Ben and Herek, Jennifer L. and Sundström, Villy and Pullerits, Tõnu and May, Volkhard}},
  issn         = {{1089-5647}},
  language     = {{eng}},
  month        = {{11}},
  number       = {{46}},
  pages        = {{11391--11394}},
  publisher    = {{The American Chemical Society (ACS)}},
  series       = {{Journal of Physical Chemistry B}},
  title        = {{Microscopic theory of exciton annihilation : Application to the LH2 antenna system}},
  url          = {{http://dx.doi.org/10.1021/jp012072y}},
  doi          = {{10.1021/jp012072y}},
  volume       = {{105}},
  year         = {{2001}},
}