Vanadium(V) oxide clusters synthesized by sublimation from bulk under fully inert conditions

Maximilian Lasserus, Martin Schnedlitz, Roman Messner, Florian Lackner, Wolfgang E. Ernst*, Andreas W. Hauser

*Korrespondierende/r Autor/in für diese Arbeit

Publikation: Beitrag in einer FachzeitschriftArtikel

Abstract

Oxide nanoparticles in the size range of a few nanometers are typically synthesized in solution or via laser ablation techniques, which open numerous channels for structural change via chemical reactions or fragmentation processes. In this work, neutral vanadium oxide nanoparticles are instead synthesized by sublimation from bulk in combination with a pickup by superfluid helium droplets. Mass spectroscopy measurements clearly demonstrate the preservation of the bulk stoichiometric ratio of vanadium to oxygen in He-grown nanoparticles, indicating a tendency towards tetrahedral coordination of the vanadium centers in finite geometries. This unexpected finding opens up new possibilities for a combined on-the-fly synthesis of nanoparticles consisting of metal and metal-oxide layers. In comparison to mass spectra obtained via direct ionization of vanadium oxide in an effusive beam, where strong fragmentation occurred, we observe a clear preference for (V 2 O 5 ) n oligomers with even n inside the He nanodroplets, which is further investigated and explained using the electronic structure theory.

Originalspracheenglisch
Seiten (von - bis)3473-3480
Seitenumfang8
FachzeitschriftChemical Science
Jahrgang10
Ausgabenummer12
DOIs
PublikationsstatusVeröffentlicht - 28 Mär 2019

ASJC Scopus subject areas

  • !!Chemistry(all)

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