Barc, B. and Ryszka, M. and Poully, J.-C. and Al Maalouf, Jabbour and el Otell, Z. and Tabet, J. and Parajuli, R. and van der Burgt, Peter J.M. and Limao-Vieira, P. and Cahillane, P. and Dampc, M. and Mason, N.J. and Eden, S. (2014) Multi-photon and electron impact ionisation studies of reactivity in adenine–water clusters. International Journal of Mass Spectrometry, 365. pp. 194-199. ISSN 1387-3806

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Abstract

Multi-photon ionisation (MPI) and electron impact ionisation (EII) mass spectrometry experiments have been carried out to probe unimolecular and intermolecular reactivities in hydrated adenine clusters. The effects of clustering with water on fragment ion production from adenine have been studied for the first time. While the observation of NH4 + fragments indicated the dissociation of protonated adenine, the dominant hydration effects were enhanced C4H4N4 + production and the suppression of dissociative ionisation pathways with high activation energies. These observations can be attributed to energy removal from the excited adenine radical cation via cluster dissociation. Comparisons of MPI and EII measurements provided the first experimental evidence supporting hypoxanthine formation in adenine–water clusters via theoretically predicted barrierless deamination reactions in closed shell complexes.

Item Type:	Article
Additional Information:	Postprint version of article, which is available at Barc, B.; Ryszka, M.; Poully, J.-C.; Jabbour Al Maalouf, E.; el Otell, Z.; Tabet, J.; Parajuli, R.; van der Burgt, P.J.M.; Lim˜ao-Vieira, P.; Cahillane, P.; Dampc, M.; Mason, N. J. and Eden, S. (2014). Multiphoton and electron impact ionisation studies of reactivity in adenine–water clusters. International Journal of Mass Spectrometry, 365-366 pp. 194–199. doi:10.1016/j.ijms.2014.01.007
Keywords:	Adenine; Cluster; Dissociative ionisation; Hypoxanthine; Multi-photon ionisation; Electron impact ionisation;
Academic Unit:	Faculty of Science and Engineering > Experimental Physics
Item ID:	5949
Identification Number:	https://doi.org/10.1016/j.ijms.2014.01.007
Depositing User:	Dr Peter van der Burgt
Date Deposited:	10 Mar 2015 14:40
Journal or Publication Title:	International Journal of Mass Spectrometry
Publisher:	Elsevier
Refereed:	Yes
URI:	http://www.journals.elsevier.com/interna...
Use Licence:	This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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