Radiation damage by extensive local water ionization from two-step electron-transfer-mediated decay of solvated ions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F23%3A43927689" target="_blank" >RIV/60461373:22340/23:43927689 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.nature.com/articles/s41557-023-01302-1" target="_blank" >https://www.nature.com/articles/s41557-023-01302-1</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1038/s41557-023-01302-1" target="_blank" >10.1038/s41557-023-01302-1</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Radiation damage by extensive local water ionization from two-step electron-transfer-mediated decay of solvated ions

Popis výsledku v původním jazyce

Biomolecular radiation damage is largely mediated by radicals and low-energy electrons formed by water ionization rather than by direct ionization of biomolecules. It was speculated that such an extensive, localized water ionization can be caused by ultrafast processes following excitation by core-level ionization of hydrated metal ions. In this model, ions relax via a cascade of local Auger–Meitner and, importantly, non-local charge- and energy-transfer processes involving the water environment. Here, we experimentally and theoretically show that, for solvated paradigmatic intermediate-mass Al3+ ions, electronic relaxation involves two sequential solute–solvent electron transfer-mediated decay processes. The electron transfer-mediated decay steps correspond to sequential relaxation from Al5+ to Al3+ accompanied by formation of four ionized water molecules and two low-energy electrons. Such charge multiplication and the generated highly reactive species are expected to initiate cascades of radical reactions. [Figure not available: see fulltext.] © 2023, The Author(s).

Název v anglickém jazyce

Radiation damage by extensive local water ionization from two-step electron-transfer-mediated decay of solvated ions

Popis výsledku anglicky

Biomolecular radiation damage is largely mediated by radicals and low-energy electrons formed by water ionization rather than by direct ionization of biomolecules. It was speculated that such an extensive, localized water ionization can be caused by ultrafast processes following excitation by core-level ionization of hydrated metal ions. In this model, ions relax via a cascade of local Auger–Meitner and, importantly, non-local charge- and energy-transfer processes involving the water environment. Here, we experimentally and theoretically show that, for solvated paradigmatic intermediate-mass Al3+ ions, electronic relaxation involves two sequential solute–solvent electron transfer-mediated decay processes. The electron transfer-mediated decay steps correspond to sequential relaxation from Al5+ to Al3+ accompanied by formation of four ionized water molecules and two low-energy electrons. Such charge multiplication and the generated highly reactive species are expected to initiate cascades of radical reactions. [Figure not available: see fulltext.] © 2023, The Author(s).

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

<a href="/cs/project/GX21-26601X" target="_blank" >GX21-26601X: Zkoumání a transformace hmoty elektrony v kapalných mikrotryskách</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Nature Chemistry

ISSN

1755-4330

e-ISSN

—

Svazek periodika

15

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

1408-1414

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-85168658740