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Verfasst von:Slavíček, Petr [VerfasserIn]   i
 Kryzhevoi, Nikolai V. [VerfasserIn]   i
Titel:Relaxation processes in aqueous systems upon X-ray ionization
Titelzusatz:entanglement of electronic and nuclear dynamics
Verf.angabe:Petr Slavíček, Nikolai V. Kryzhevoi, Emad F. Aziz, and Bernd Winter
Jahr:2016
Jahr des Originals:2015
Umfang:10 S.
Fussnoten:Published: December 29, 2015 ; Gesehen am 08.05.2020
Titel Quelle:Enthalten in: The journal of physical chemistry letters
Ort Quelle:Washington, DC : ACS, 2010
Jahr Quelle:2016
Band/Heft Quelle:7(2016), 2, Seite 234-243
ISSN Quelle:1948-7185
Abstract:The knowledge of primary processes following the interaction of high-energy radiation with molecules in liquid phase is rather limited. In the present Perspective, we report on a newly discovered type of relaxation process involving simultaneous autoionization and proton transfer between adjacent molecules, so-called proton transfer mediated charge separation (PTM-CS) process. Within PTM-CS, transients with a half-transferred proton are formed within a few femtoseconds after the core-level ionization event. Subsequent nonradiative decay of the highly nonequilibrium transients leads to a series of reactive species, which have not been considered in any high-energy radiation process in water. Nonlocal electronic decay processes are surprisingly accelerated upon proton dynamics. Such strong coupling of electronic and nuclear dynamics is a general phenomenon for hydrogen-bonded systems, however, its probability correlates strongly with hydration geometry. We suggest that the newly observed processes will impact future high-energy radiation-chemistry-relevant modeling, and we envision application of autoionization spectroscopy for identification of solution structure details.
DOI:doi:10.1021/acs.jpclett.5b02665
URL:Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.

Volltext: https://doi.org/10.1021/acs.jpclett.5b02665
 DOI: https://doi.org/10.1021/acs.jpclett.5b02665
Datenträger:Online-Ressource
Sprache:eng
K10plus-PPN:1697727468
Verknüpfungen:→ Zeitschrift

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