Jump to main content
Jump to site search

Issue 41, 2017
Previous Article Next Article

The structure of coronene cluster ions inferred from H2 uptake in the gas phase

Author affiliations

Abstract

Mass spectra of helium nanodroplets doped with H2 and coronene feature anomalies in the ion abundance that reveal anomalies in the energetics of adsorption sites. The coronene monomer ion strongly adsorbs up to n = 38 H2 molecules indicating a commensurate solvation shell that preserves the D6h symmetry of the substrate. No such feature is seen in the abundance of the coronene dimer through tetramer complexed with H2; this observation rules out a vertical columnar structure. Instead we see evidence for a columnar structure in which adjacent coronenes are displaced in parallel, forming terraces that offer additional strong adsorption sites. The experimental value for the number of adsorption sites per terrace, approximately six, barely depends on the number of coronene molecules. The displacement estimated from this number exceeds the value reported in several theoretical studies of the bare, neutral coronene dimer.

Graphical abstract: The structure of coronene cluster ions inferred from H2 uptake in the gas phase

Back to tab navigation

Supplementary files

Publication details

The article was received on 24 Jul 2017, accepted on 24 Aug 2017 and first published on 12 Oct 2017


Article type: Paper
DOI: 10.1039/C7CP04999D
Citation: Phys. Chem. Chem. Phys., 2017,19, 27968-27973
  • Open access: Creative Commons BY license
  •   Request permissions

    The structure of coronene cluster ions inferred from H2 uptake in the gas phase

    M. Goulart, M. Kuhn, B. Rasul, J. Postler, M. Gatchell, H. Zettergren, P. Scheier and O. Echt, Phys. Chem. Chem. Phys., 2017, 19, 27968
    DOI: 10.1039/C7CP04999D

    This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material.

    Reproduced material should be attributed as follows:

    • For reproduction of material from NJC:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the Centre National de la Recherche Scientifique (CNRS) and the RSC.
    • For reproduction of material from PCCP:
      [Original citation] - Published by the PCCP Owner Societies.
    • For reproduction of material from PPS:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC.
    • For reproduction of material from all other RSC journals:
      [Original citation] - Published by The Royal Society of Chemistry.

    Information about reproducing material from RSC articles with different licences is available on our Permission Requests page.

Search articles by author

Spotlight

Advertisements