Relaxation Dynamics and Genuine Properties of the Solvated Electron in Neutral Water Clusters
Open Access
- 5 August 2019
- journal article
- research article
- Published by American Chemical Society (ACS) in The Journal of Physical Chemistry Letters
- Vol. 10 (17), 4777-4782
- https://doi.org/10.1021/acs.jpclett.9b01802
Abstract
We have investigated the solvation dynamics and the genuine binding energy and photoemission anisotropy of the solvated electron in neutral water clusters with a combination of time-resolved photoelectron velocity map imaging and electron scattering simulations. The dynamics was probed with a UV probe pulse following above-band-gap excitation by an EUV pump pulse. The solvation dynamics is completed within about 2 ps. Only a single band is observed in the spectra, with no indication for isomers with distinct binding energies. Data analysis with an electron scattering model reveals a genuine binding energy in the range of 3.55–3.85 eV and a genuine anisotropy parameter in the range of 0.51–0.66 for the ground-state hydrated electron. All of these observations coincide with those for liquid bulk, which is rather unexpected for an average cluster size of 300 molecules.Keywords
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Funding Information
- Schweizerischer Nationalfonds zur F?rderung der Wissenschaftlichen Forschung (200020_172472)
- H2020 European Research Council (786636)
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