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Electron-vibrational coupling in the fenna-matthews-olson complex of prosthecochloris aestuarii determined by temperature-dependent absorption and fluorescence line-narrowing measurements

Wendung, Markus ; Pullerits, Tõnu LU ; Przyjalgowski, Milosz A. ; Vulto, Simone I.E. ; Aartsma, Thijs J. ; Van Grondelle, Rienk and Van Amerongen, Herbert (2000) In Journal of Physical Chemistry B 104(24). p.5825-5831
Abstract

Fluorescence line-narrowing measurements at low temperature were performed on the Fenna-MatthewsOlson complex of Prosthecochloris aestuarii. Superimposed on the phonon wing, several vibronic bands could be observed. By use of these data, the temperature dependence of the lowest-energy absorption band was modeled based on the linear harmonic Franck-Condon approximation. The overall Huang-Rhys factor was estimated to be 0.45. The maximum of the phonon distribution was located at 20 cm-1. Thirty vibrational modes could be observed, and their Franck-Condon factors were estimated. The strongest modes were located at 36, 70, and ∼195 cm-1. For the full width at half-maximum of the inhomogeneous broadening, a value of 80... (More)

Fluorescence line-narrowing measurements at low temperature were performed on the Fenna-MatthewsOlson complex of Prosthecochloris aestuarii. Superimposed on the phonon wing, several vibronic bands could be observed. By use of these data, the temperature dependence of the lowest-energy absorption band was modeled based on the linear harmonic Franck-Condon approximation. The overall Huang-Rhys factor was estimated to be 0.45. The maximum of the phonon distribution was located at 20 cm-1. Thirty vibrational modes could be observed, and their Franck-Condon factors were estimated. The strongest modes were located at 36, 70, and ∼195 cm-1. For the full width at half-maximum of the inhomogeneous broadening, a value of 80 cm-1 was determined. We did not find any evidence for the presence of different excitonic states in the lowest-energy absorption band.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Physical Chemistry B
volume
104
issue
24
pages
7 pages
publisher
The American Chemical Society (ACS)
external identifiers
  • scopus:0342520879
ISSN
1520-6106
DOI
10.1021/jp000077+
language
English
LU publication?
yes
id
4addb5c2-d4a7-43d6-b08b-033cdfc451cf
date added to LUP
2025-10-28 17:07:10
date last changed
2026-01-23 11:55:14
@article{4addb5c2-d4a7-43d6-b08b-033cdfc451cf,
  abstract     = {{<p>Fluorescence line-narrowing measurements at low temperature were performed on the Fenna-MatthewsOlson complex of Prosthecochloris aestuarii. Superimposed on the phonon wing, several vibronic bands could be observed. By use of these data, the temperature dependence of the lowest-energy absorption band was modeled based on the linear harmonic Franck-Condon approximation. The overall Huang-Rhys factor was estimated to be 0.45. The maximum of the phonon distribution was located at 20 cm<sup>-1</sup>. Thirty vibrational modes could be observed, and their Franck-Condon factors were estimated. The strongest modes were located at 36, 70, and ∼195 cm<sup>-1</sup>. For the full width at half-maximum of the inhomogeneous broadening, a value of 80 cm<sup>-1</sup> was determined. We did not find any evidence for the presence of different excitonic states in the lowest-energy absorption band.</p>}},
  author       = {{Wendung, Markus and Pullerits, Tõnu and Przyjalgowski, Milosz A. and Vulto, Simone I.E. and Aartsma, Thijs J. and Van Grondelle, Rienk and Van Amerongen, Herbert}},
  issn         = {{1520-6106}},
  language     = {{eng}},
  number       = {{24}},
  pages        = {{5825--5831}},
  publisher    = {{The American Chemical Society (ACS)}},
  series       = {{Journal of Physical Chemistry B}},
  title        = {{Electron-vibrational coupling in the fenna-matthews-olson complex of prosthecochloris aestuarii determined by temperature-dependent absorption and fluorescence line-narrowing measurements}},
  url          = {{http://dx.doi.org/10.1021/jp000077+}},
  doi          = {{10.1021/jp000077+}},
  volume       = {{104}},
  year         = {{2000}},
}