Photoinduced Symmetry-Breaking Charge Separation: The Direction of the Charge Transfer


  • This research has been supported by the Swiss National Science Foundation (Project Nr. 200020-124393 and the NCCR-MUST) and the University of Geneva. We acknowledge supercomputer time at the Swiss National Supercomputing Centre (CSCS) and the Centre for Advanced Modelling Science (CADMOS).


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Even flow: Photoinduced symmetry-breaking charge separation takes place in a few picoseconds in a 1,3-bis(perylene)propane dyad in polar solvents. Polarized transient absorption measurements show that the direction of the charge flow is random and entirely governed by the fluctuations of the solvent orientation around the dyad.