Imaging The Reactive Radical-cation Complex In The Ionized Liquid Water

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https://hdl.handle.net/2142/116752

Title: Imaging The Reactive Radical-cation Complex In The Ionized Liquid Water
Author(s): Lin, Ming-Fu
Issue Date: 2022-06-21
Keyword(s): Mini-symposium: Spectroscopy meets Chemical Dynamics
Abstract: Liquid water is important in nature and plays a critical role in numerous chemical and biological applications. The elementary reaction pathways for ionized water have been extensively studied, however, the short-lived reactive complex and its structural dynamic response after the proton transfer reaction remain illusive. Using a liquid-phase ultrafast electron diffraction technique to study the intermolecular oxygen-oxygen and oxygen-hydrogen bonds, we captured the short-lived radical-cation complex OH(H3O+) that was formed within 140 fs through a direct and fast oxygen-oxygen bond contraction and proton transfer, followed by the radical-cation pair dissociation and the subsequent structural relaxation of water shells within 250 fs. These studies provide direct evidence of this short-lived metastable radical-cation complex before separation, therefore improving our fundamental understanding of elementary reaction dynamics in ionized liquid water.
Publisher: International Symposium on Molecular Spectroscopy
Type of Resource: text
Language: eng
Handle URL: https://hdl.handle.net/2142/116752
DOI: https://doi.org/10.15278/isms.2022.TA10