Delocalizing Electrons in Water with Light
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Experimental information on the spatial extent of the putative p and conduction band states of the hydrated electron (eeq)has been obtained by monitoring and controlling the electron/hole spatial separation of a photogenerated eeq/hole pair using a femtosecond laser pulse sequence. Optical excitation of eeq with two photons is observed to dramatically alter its spatial distribution and geminate recombination yield with the hole. One-photon excitation, in contrast, has no effect on the spatial distribution. The results strongly confirm theoretical predictions on the size and location of excited states of eeq.
author list (cited authors)
Son, D. H., Kambhampati, P., Kee, T. W., & Barbara, P. F.