Solvated electrons at the water-air interface: surface versus bulk signal in low kinetic energy photoelectron spectroscopy.
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Physical chemistry chemical physics : PCCP, ISSN: 1463-9084, Vol: 14, Issue: 16, Page: 5837-42
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- Physics and Astronomy; Chemistry; MOLECULAR-DYNAMICS SIMULATION; PUMP-PROBE SPECTROSCOPY; HYDRATED-ELECTRON; COMPUTER-SIMULATION; CLUSTER ANIONS; LIQUID WATER; IODIDE; ABSORPTION; CAVITY; OCCUPY
Time-resolved photoelectron spectroscopy at low kinetic energies (≲5 eV) is applied to dilute iodide solutions with different surface and bulk contributions. The results indicate a pronounced surface sensitivity. Signals assigned to solvated electrons near the liquid surface decay rapidly on a sub-ps timescale. In contrast to the literature, a long-lived surface solvated electron at 1.6 eV binding energy is not observed.