Dresden 2011 – scientific programme
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ISS: Intersectional Sessions
ISS 5: Transport and Spectroscopy in Molecular Nanostructures I (CPP, MO, related to SYMN)
ISS 5.2: Talk
Wednesday, March 16, 2011, 14:15–14:30, ZEU 160
Single molecule fluorescence-excitation and emission spectroscopy on the same individual light harvesting 2 complexes from Rps. acidophila 10050 — •Ralf Kunz1, Kõu Timpmann2, Arvi Freiberg2, Richard J. Cogdell3, and Jürgen Köhler1 — 1Experimental Physics IV, University of Bayreuth — 2Institute of Physics, University of Tartu — 3Institute of Molecular, Cell & Systems Biology College of Medical, Veterinary and Life Sciences, University of Glasgow
Fluorescence-excitation and emission spectra from the same individual light harvesting 2 complexes from Rps. acidophila strain 10050 measured at low temperature will be presented. The combination of both spectroscopic techniques
provides information about the absorbing and emitting electronic states within the same LH2 complex.
To our surprise we find different types of emission spectra (with/without zero-phonon line) which do not correlate with different types of fluorescence-excitation spectra. The shape of the emission spectra, however, shows a clear correlation with the spectral position.