Ultrafast Internal Conversion and Solvation of Electrons in Water, Methanol, and Ethanol

Ultrafast internal conversion from the first excited state of a solvated electron in water, methanol, and ethanol is investigated using time-resolved photoelectron spectroscopy of liquid microjets and a spectral retrieval method. Photoelectron spectra corrected for inelastic scattering clearly revea...

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Bibliographic Details
Published in:The journal of physical chemistry letters Vol. 10; no. 16; pp. 4499 - 4504
Main Authors: Karashima, Shutaro, Yamamoto, Yo-ichi, Suzuki, Toshinori
Format: Journal Article
Language:English
Published: United States American Chemical Society 15-08-2019
Online Access:Get full text
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Summary:Ultrafast internal conversion from the first excited state of a solvated electron in water, methanol, and ethanol is investigated using time-resolved photoelectron spectroscopy of liquid microjets and a spectral retrieval method. Photoelectron spectra corrected for inelastic scattering clearly reveal well-separated signals from the excited and ground states, and the latter enables us to analyze the solvation dynamics in the ground state after internal conversion. Measurements with 25 fs time resolution identify a rapid increase in the vertical electron binding energy of the solvated electron owing to nuclear wave packet motions in the excited state and allow us to precisely determine the internal conversion time.
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ISSN:1948-7185
1948-7185
DOI:10.1021/acs.jpclett.9b01750