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Proton transfer from pinene stabilizes water clusters
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SYSNO ASEP 0506491 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Proton transfer from pinene stabilizes water clusters Author(s) Poštulka, J. (CZ)
Slavíček, Petr (UFCH-W) RID
Domaracka, A. (FR)
Pysanenko, Andriy (UFCH-W) RID, ORCID
Fárník, Michal (UFCH-W) RID, ORCID
Kočišek, Jaroslav (UFCH-W) RID, ORCIDSource Title Physical Chemistry Chemical Physics. - : Royal Society of Chemistry - ISSN 1463-9076
Roč. 21, č. 26 (2019), s. 13925-13933Number of pages 9 s. Language eng - English Country GB - United Kingdom Keywords proton tranfer ; clusters ; pinene Subject RIV CF - Physical ; Theoretical Chemistry OECD category Physical chemistry R&D Projects GJ16-10995Y GA ČR - Czech Science Foundation (CSF) 7AMB17FR047 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) GA17-04068S GA ČR - Czech Science Foundation (CSF) Method of publishing Limited access Institutional support UFCH-W - RVO:61388955 UT WOS 000474136100059 EID SCOPUS 85065413146 DOI 10.1039/c8cp05959d Annotation We ionize small mixed pinene-water clusters by electron impact or by using photons after sodium doping and analyze the products by mass spectrometry. Electron ionization results in the formation of pure pinene, mixed pinene-water and protonated water cluster cations. The ´´fragmentation free´´ photoionization after sodium doping results into the formation of only water-Na+ clusters with a mean cluster size below that observed after electron ionization. We show that protonated water clusters are formed both directly and indirectly via pinene ionziation. The latter pathway is detailed by ab intio calculations, demonstrating the feasibility of proton transfer from pinene for larger water clusters. In small clusters, the proton transfer reaction is controlled by proton solvation energy and we can thus estimate its value for finite size clusters. The observed stabilization mechanism of water clusters may contribute to the formation of cloud condensation nuclei in the atmosphere. Workplace J. Heyrovsky Institute of Physical Chemistry Contact Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Year of Publishing 2020 Electronic address http://hdl.handle.net/11104/0297724
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