Skip to ContentSkip to Navigation
ResearchZernike (ZIAM)NewsSeminars

Lecture J. Koehler


24 November 2006 FWN-Building 5116.0116, Nijenborgh 4, 9747 AG, Groningen
Speaker:Prof. Dr. J. Koehler
Affiliation:Universitaet Bayreuth, Germany
Title:Sunlight, purple bacteria and quantum mechaics: a single molecule study
Date:Fri Nov 24, 2006
Location:FWN-Building 5116.0116
Host:J. Knoester
Telephone:+31 50 363 4369


Low temperature (1. K) single-molecule fluorescence excitation spectra have been recorded for individual RC-LH1 complexes for Rps. palustris and the pufX` strain of Rb. sphaeroides. More then 80% of the complexes from Rb. sphaeroides only show broad absorption bands, whereas all of the measurable complexes from Rps. palustris also have a narrow line at the low-energy end of their spectrum. We describe how the presence of this narrow feature indicates the presence of a gap in the electronic structure of the LH1 from Rps. palustris, which provides strong support for the physical gap that was previously modelled in its x-ray crystal structure.
Last modified:22 October 2012 2.30 p.m.