We are currently investigating the role of the excited states of radical ions in photoinduced bimolecular charge separation (CS). Using time resolved broad-band fluorescence up-conversion (FLUPS), multiple CS reactions have been studied, with the reactions in the normal and barrierless region showing emission from the pure fluorophore and those occurring in the Marcus inverted region showing an additional emissive component (spectra at 50 fs shown at the lower part of the above figure). This emissive component is tentatively assigned to emission from an excited state of the radical ion pair.
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Physical Chemistry Department - Sciences II - University of Geneva
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