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Core and Valence Level Photoelectron Spectroscopy of Nanosolvated KCl

[Image: see text] The solvation of alkali and halide ions in the aqueous environment has been a subject of intense experimental and theoretical research with multidisciplinary interests; yet, a comprehensive molecular-level understanding has still not been obtained. In recent years, electron spectro...

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Detalles Bibliográficos
Autores principales: Pelimanni, Eetu, Hautala, Lauri, Hans, Andreas, Kivimäki, Antti, Kook, Mati, Küstner-Wetekam, Catmarna, Marder, Lutz, Patanen, Minna, Huttula, Marko
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2021
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8279652/
https://www.ncbi.nlm.nih.gov/pubmed/34034483
http://dx.doi.org/10.1021/acs.jpca.1c01539
Descripción
Sumario:[Image: see text] The solvation of alkali and halide ions in the aqueous environment has been a subject of intense experimental and theoretical research with multidisciplinary interests; yet, a comprehensive molecular-level understanding has still not been obtained. In recent years, electron spectroscopy has been increasingly applied to study the electronic and structural properties of aqueous ions with implications, especially in atmospheric chemistry. In this work, we report core and valence level (Cl 2p, Cl 3p, and K 3p) photoelectron spectra of the common alkali halide, KCl, doped in gas-phase water clusters in the size range of a few hundred water molecules. The results indicate that the electronic structure of these nanosolutions shows a distinct character from that observed at the liquid–vapor interface in liquid microjets and ambient pressure setups. Insights are provided into the unique solvation properties of ions in a nanoaqueous environment, emerging properties of bulk electrolyte solutions with growing cluster size, and sensitivity of the electronic structure to varying solvation configurations.