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Direct tracking of ultrafast proton transfer in water dimers

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F23%3A43927292" target="_blank" >RIV/60461373:22340/23:43927292 - isvavai.cz</a>

  • Result on the web

    <a href="https://www.science.org/doi/10.1126/sciadv.adg7864" target="_blank" >https://www.science.org/doi/10.1126/sciadv.adg7864</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1126/sciadv.adg7864" target="_blank" >10.1126/sciadv.adg7864</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Direct tracking of ultrafast proton transfer in water dimers

  • Original language description

    Upon ionization, water forms a highly acidic radical cation H2O+· that undergoes ultrafast proton transfer (PT)—a pivotal step in water radiation chemistry, initiating the production of reactive H3O+, OH⋅ radicals, and a (hydrated) electron. Until recently, the time scales, mechanisms, and state-dependent reactivity of ultrafast PT could not be directly traced. Here, we investigate PT in water dimers using time-resolved ion coincidence spectroscopy applying a free-electron laser. An extreme ultraviolet (XUV) pump photon initiates PT, and only dimers that have undergone PT at the instance of the ionizing XUV probe photon result in distinct H3O+ + OH+ pairs. By tracking the delay-dependent yield and kinetic energy release of these ion pairs, we measure a PT time of (55 ± 20) femtoseconds and image the geometrical rearrangement of the dimer cations during and after PT. Our direct measurement shows good agreement with nonadiabatic dynamics simulations for the initial PT and allows us to benchmark nonadiabatic theory.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    10403 - Physical chemistry

Result continuities

  • Project

    <a href="/en/project/GX21-26601X" target="_blank" >GX21-26601X: Probing and Transforming Matter by Electrons in Liquid Jets</a><br>

  • Continuities

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

Others

  • Publication year

    2023

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    Science Advances

  • ISSN

    2375-2548

  • e-ISSN

    2375-2548

  • Volume of the periodical

    9

  • Issue of the periodical within the volume

    28

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    9

  • Pages from-to

    "eadg7864"

  • UT code for WoS article

    001033220400010

  • EID of the result in the Scopus database

    2-s2.0-85164541885