The process of photosynthesis is initiated by the capture of sunlight by a network of light-absorbing molecules (chromophores), which are also responsible for the subsequent funneling of the excitation energy to the reaction centers. Through evolution, genetic drift, and speciation, photosynthetic organisms have discovered many solutions for light harvesting. Rienk van Grondelle has made major contributions to elucidating the fundamental physical mechanisms that underlie light harvesting and charge separation. He has developed theoretical tools for understanding complex spectroscopic data. Using multidimensional electronic spectroscopy, he recently showed that ultrafast charge separation is driven by specific molecular vibrations that allow electronic coherences to stay alive. He proposed a molecular model for photoprotection and demonstrated that the major plant light-harvesting complex operates as a nanoswitch, controlled by its biological environment. These results, of utmost importance for understanding photosynthesis, have inspired technological solutions for artificial and/or redesigned photosynthesis, as a route toward sustainable energy production.


Seminar, November 25, 2016, 12:00. ICFO’s Blue Lecture Room

Hosted by Prof. Niek van Hulst