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Exciton Self Trapping in Photosynthetic Pigment-Protein Complexes Studied by Single-Molecule Spectroscopy

Title data

Kunz, Ralf ; Timpmann, Kõu ; Southall, June ; Cogdell, Richard J. ; Freiberg, Arvi ; Köhler, Jürgen:
Exciton Self Trapping in Photosynthetic Pigment-Protein Complexes Studied by Single-Molecule Spectroscopy.
In: The Journal of Physical Chemistry B. Vol. 116 (2012) Issue 36 . - pp. 11017-11023.
ISSN 1520-5207
DOI: https://doi.org/10.1021/jp3040456

Abstract in another language

Evidence for the formation of self-trapped exciton states in photosynthetic antenna complexes is provided by comparing single-molecule fluorescenceexcitation and emission spectra that have been recorded from the same individual LH2 complex from Rhodopseudomonas acidophila. While the excitation spectra showed the signatures for the B800 and B850 bands as observed previously, two distinctively different types of emission spectra were found. One group of antenna complexes shows spectra with a relatively narrow spectral profile with a clear signature of a zero-phonon line, whereas the other group of complexes displays spectra that consist only of a broad featureless band. Analysis of these data reveals clear correlations between the spectral position of the emission, the width of the spectral profile, and the associated electronphonon coupling strength.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Lehrstuhl Experimentalphysik IX - Spektroskopie weicher Materie > Lehrstuhl Experimentalphysik IX - Spektroskopie weicher Materie - Univ.-Prof. Dr. Jürgen Köhler
Faculties
Faculties > Faculty of Mathematics, Physics und Computer Science
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Lehrstuhl Experimentalphysik IX - Spektroskopie weicher Materie
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 530 Physics
Date Deposited: 10 Apr 2018 11:26
Last Modified: 10 Apr 2018 11:26
URI: https://eref.uni-bayreuth.de/id/eprint/43359