Jump to main content
Jump to site search

Issue 8, 2018
Previous Article Next Article

Dissociative ionisation of adamantane: a combined theoretical and experimental study

Author affiliations

Abstract

Diamond nanoparticles, or nanodiamonds, are intriguing carbon-based materials which, maybe surprisingly, are the most abundant constituent of presolar grains. While the spectroscopic properties of even quite large diamondoids have already been explored, little is known about their unimolecular fragmentation processes. In this paper we characterise the dissociative ionisation of adamantane (C10H16) – the smallest member of the diamondoid family – utilising imaging Photoelectron Photoion Coincidence (iPEPICO) spectroscopy and Density Functional Theory (DFT) calculations. We have found adamantane to dissociatively photoionise via several parallel channels of which H, C3H7 and C4H8 losses are the most important ones. Calculations confirm the existence of a rate-limiting transition state for the multiple C-loss channels, which is located at 10.55 eV with respect to neutral adamantane. In addition, we found dissociation channels leading to small cationic hydrocarbons, which may be relevant in the interstellar medium.

Graphical abstract: Dissociative ionisation of adamantane: a combined theoretical and experimental study

Back to tab navigation

Supplementary files

Article information


Submitted
31 Aug 2017
Accepted
10 Nov 2017
First published
17 Nov 2017

This article is Open Access

Phys. Chem. Chem. Phys., 2018,20, 5399-5406
Article type
Paper

Dissociative ionisation of adamantane: a combined theoretical and experimental study

A. Candian, J. Bouwman, P. Hemberger, A. Bodi and A. G. G. M. Tielens, Phys. Chem. Chem. Phys., 2018, 20, 5399
DOI: 10.1039/C7CP05957D

This article is licensed under a Creative Commons Attribution-NonCommercial 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 and it is not used for commercial purposes.

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.


Social activity

Search articles by author

Spotlight

Advertisements