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Multivariate analysis of single-molecule spectra : surpassing spectral diffusion

Title data

Hofmann, Clemens ; Michel, Hartmut ; van Heel, Marin ; Köhler, Jürgen:
Multivariate analysis of single-molecule spectra : surpassing spectral diffusion.
In: Physical Review Letters. Vol. 94 (2005) Issue 19 . - Art.Nr. 195501.
ISSN 1079-7114
DOI: https://doi.org/10.1103/PhysRevLett.94.195501

Abstract in another language

The full exploitation of single-molecule spectroscopy in disordered systems is often hampered by spectral diffusion processes of the optical transitions due to structural fluctuations in the local environment of the probe molecule which leads to temporal averaging of the signal. Multivariate statistical pattern recognition techniques, originally developed for single-molecule cryoelectron microscopy, allow us to retrieve detailed information from optical single-molecule spectra. As an example, we present the phonon side band of the B800 excitations of the light-harvesting 2 (LH2) complex from Rhodospirillum molischianum, revealing the electron-phonon coupling strength for these transitions. The measured Debye-Waller factors, ranging from 0.4 to 0.9, fall in the regime of weak electron-phonon coupling.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: spectroscopy
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: 12 Apr 2018 06:23
Last Modified: 12 Apr 2018 06:23
URI: https://eref.uni-bayreuth.de/id/eprint/43316