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  Heterogeneous Clusters of Phthalocyanine and Water Prepared and Probed in Superfluid Helium Nanodroplets

Fischer, J., Schlaghaufer, F., Lottner, E.-M., Slenczka, A., Christiansen, L., Stapelfeldt, H., et al. (2019). Heterogeneous Clusters of Phthalocyanine and Water Prepared and Probed in Superfluid Helium Nanodroplets. The Journal of Physical Chemistry A, 123(46), 10057-10064. doi:10.1021/acs.jpca.9b07302.

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Datensatz-Permalink: https://hdl.handle.net/21.11116/0000-0005-1C9F-A Versions-Permalink: https://hdl.handle.net/21.11116/0000-000A-286F-E
Genre: Zeitschriftenartikel

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acs.jpca.9b07302-1.pdf (Verlagsversion), 2MB
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2019
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 Urheber:
Fischer, J.1, Autor
Schlaghaufer, F.1, Autor
Lottner, E.-M.1, Autor
Slenczka, A.1, Autor
Christiansen, L.2, Autor
Stapelfeldt, H.2, Autor
Karra, Mallikarjun3, Autor           
Friedrich, Bretislav3, Autor           
Mullan, Th.4, Autor
Schütz, M.4, Autor
Usvyat, D.4, Autor
Affiliations:
1Institut für Physikalische und Theoretische Chemie, Universität Regensburg, 93053 Regensburg, Germany, ou_persistent22              
2Department of Chemistry, Aarhus University, Langelandsgade 140, 8000 Aarhus C, Denmark, ou_persistent22              
3Molecular Physics, Fritz Haber Institute, Max Planck Society, ou_634545              
4Institut für Chemie, Humboldt-Universität zu Berlin, Unter den Linden 6, 10099 Berlin, Germany, ou_persistent22              

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 Zusammenfassung: Superfluid helium nanodroplets comprised of thousands to millions of helium atoms can serve as a reactor for the synthesis of heterogeneous molecular clusters at cryogenic conditions. The cluster synthesis occurs via consecutive pick-up of the cluster building blocks by the helium droplet and their subsequent coalescence within the droplet. The effective collision cross section of the building blocks is determined by the helium droplet size and thus exceeds by orders of magnitude that of a reactive collision in the gas phase. Moreover, the cryogenic helium environment (at 0.38 K) as a host promotes the formation of metastable cluster configurations. The question arises as to the extent of the actual involvement of the helium environment in the cluster formation. The present study deals with clusters of single phthalocyanine (Pc) molecules with single water molecules. A large fluorophore such as Pc offers several sites where the water molecule can attach. The resulting isomeric variants of the Pc–H2O complex can be selectively identified by electronic spectroscopy. We compare the experimental electronic spectra of the Pc–H2O complex generated in superfluid helium nanodroplets with the results of quantum-chemical calculations on the same cluster but under gas-phase conditions. The number of isomeric variants observed in the helium droplet experiment comes out the same as that obtained from our gas-phase calculations.

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Sprache(n): eng - English
 Datum: 2019-07-312019-10-232019-10-312019-11-21
 Publikationsstatus: Erschienen
 Seiten: 8
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1021/acs.jpca.9b07302
 Art des Abschluß: -

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Titel: The Journal of Physical Chemistry A
  Andere : J. Phys. Chem. A
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Columbus, OH : American Chemical Society
Seiten: 8 Band / Heft: 123 (46) Artikelnummer: - Start- / Endseite: 10057 - 10064 Identifikator: ISSN: 1089-5639
CoNE: https://pure.mpg.de/cone/journals/resource/954926947766_4