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Impact of Initial Electron Localization on Electron Solvation Dynamics in Liquid Water
Nathaniel Okpara1,2, Mathilde Goullieux1, Ludger Inhester1,3
1Center for Free-Electron Laser Science CFEL, Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany.
The Journal of Physical Chemistry Letters
|June 26, 2026
Summary
The initial state of an excess electron in water significantly impacts its solvation dynamics. How the electron is injected critically determines its behavior and localization processes.
Area of Science:
- Physical Chemistry
- Quantum Mechanics
- Computational Chemistry
Background:
- The solvation of excess electrons in liquid water is a complex quantum mechanical process.
- Existing research presents persistent controversies regarding electron localization, solvation time scales, and dynamics.
Purpose of the Study:
- To investigate how the initial localization of an excess electron influences its solvation process in liquid water.
- To elucidate the role of excited-state dynamics in solvation time scales and water structure heating.
Main Methods:
- Utilizing ab initio molecular dynamics simulations.
- Analyzing the impact of varying degrees of initial electron delocalization.
Main Results:
- The degree of initial electron delocalization critically governs solvation dynamics.
- Excited-state dynamics play a crucial role in modulating solvation time scales.
- Energy released during internal conversion heats the surrounding water structure.
Conclusions:
- The injection method of an excess electron fundamentally dictates its subsequent solvation dynamics.
- Understanding initial electron localization is key to resolving controversies in excess electron solvation.
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