James, Rachel L.; Jones, Nykola C.; Hoffmann, Søren V. and Dawes, Anita
(2019).
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| DOI (Digital Object Identifier) Link: | https://doi.org/10.1039/c9ra00462a |
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| Google Scholar: | Look up in Google Scholar |
Abstract
We present the first vacuum ultraviolet spectroscopic study of an interstellar ice analogue of a 1 : 100 benzene (C6H6) : carbon dioxide (CO2) mixture which has been energetically processed with 1 keV electrons. We have exploited the fact that benzene has a relatively high photoabsorption cross section in the vacuum ultraviolet region to study this dilute mixture of benzene. Before irradiation with 1 keV electrons, we observed that the benzene electronic transition bands in the C6H6 : CO2 mixture exhibits a blueshift in band position towards energies observed in the gas-phase compared with that of pure, amorphous benzene and we have attributed this to a matrix isolation effect. After irradiation, a lowering in intensity of both the carbon dioxide and benzene electronic transition bands was observed, as well as the formation of the small irradiation product, carbon monoxide. A residue was obtained at 200 K which showed characteristic features of the benzene electronic transition of 1E1u ← 1A1g, but with additional structure suggesting the formation of a benzene derivative.
| Item Type: | Journal Item |
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| Copyright Holders: | 2019 The Royal Society of Chemistry |
| ISSN: | 2046-2069 |
| Academic Unit/School: | Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences Faculty of Science, Technology, Engineering and Mathematics (STEM) |
| Item ID: | 59251 |
| SWORD Depositor: | Jisc Publications-Router |
| Depositing User: | Jisc Publications-Router |
| Date Deposited: | 25 Feb 2019 11:25 |
| Last Modified: | 31 Mar 2019 05:25 |
| URI: | http://oro.open.ac.uk/id/eprint/59251 |
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