Natural and Artificial Chlorosomal Light-Harvesting Antenna: Relationship between the Supramolecular Organisation and the Properties of the Electronic Excitations.
Final Report Abstract
In this project, we have investigated natural and artificial light harvesting antenna systems built up from molecular aggregates. We employed a combination of techniques (and cooperation partners) such as single-molecule spectroscopy, biochemical mutagenesis, chemical synthesis, cryo-electron microscopy, molecular modelling, and spectral simulation for elucidating the supramolecular organisation of these systems. For the natural systems studied, we found a remarkable resemblance in the structural models and came to the conclusions that the three systems studied feature a very similar underlying construction principle. For the artificial system we proposed a new packing model that has not been considered in the literature so far. Future research has to show whether this is also of relevance for the natural assemblies.
Publications
- Structure of Light-Harvesting Aggregates in Individual Chlorosomes. J. Phys. Chem. B. 120 (2016) 5367-5376
L. M. Günther, M. Jendrny, E. A. Bloemsma, M. Tank, G. T. Oostergetel, D. A. Bryant, J. Knoester, J. Köhler
(See online at https://doi.org/10.1021/acs.jpcb.6b03718) - Structural Variations in Chlorosomes from Wild-Type and a bchQR Mutant of Chlorobaculum tepidum Revealed by Single-Molecule Spectroscopy. J. Phys. Chem. B 122 (2018) 6712-6723
L. M. Günther, A. Löhner, C. Reiher, T. Kunzel, T. L. C. Jansen, M. Tank, D. A. Bryant, J. Knoester, J. Köhler
(See online at https://doi.org/10.1021/acs.jpcb.8b02875) - Spectral and Structural Variations of Biomimetic Light-Harvesting Nanotubes. J. Phys. Chem. Lett. 10 (2019) 2715-2724
A. Löhner, T. Kunsel, M. I. S. Röhr, T. L. C. Jansen, S. Sengupta, F. Würthner, J. Knoester, J. Köhler
(See online at https://doi.org/10.1021/acs.jpclett.9b00303)
