Revealing excess protons in the infrared spectrum of liquid water.
Journal
Scientific reports
ISSN: 2045-2322
Titre abrégé: Sci Rep
Pays: England
ID NLM: 101563288
Informations de publication
Date de publication:
09 Jul 2020
09 Jul 2020
Historique:
received:
11
04
2020
accepted:
17
06
2020
entrez:
11
7
2020
pubmed:
11
7
2020
medline:
11
7
2020
Statut:
epublish
Résumé
The most common species in liquid water, next to neutral [Formula: see text] molecules, are the [Formula: see text] and [Formula: see text] ions. In a dynamic picture, their exact concentrations depend on the time scale at which these are probed. Here, using a spectral-weight analysis, we experimentally resolve the fingerprints of the elusive fluctuations-born short-living [Formula: see text], [Formula: see text], [Formula: see text], and [Formula: see text] ions in the IR spectra of light ([Formula: see text]), heavy ([Formula: see text]), and semi-heavy (HDO) water. We find that short-living ions, with concentrations reaching [Formula: see text] of the content of water molecules, coexist with long-living pH-active ions on the picosecond timescale, thus making liquid water an effective ionic liquid in femtochemistry.
Identifiants
pubmed: 32647228
doi: 10.1038/s41598-020-68116-w
pii: 10.1038/s41598-020-68116-w
pmc: PMC7347896
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
11320Subventions
Organisme : Deutsche Forschungsgemeinschaft
ID : DR228/61-1
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