Mass Spectrometric Investigation of Anions Formed upon Free Electron Attachment to Nucleobase Molecules and Clusters Embedded in Superfluid Helium Droplets
(2006) Physical Review Letters — Vol. 97, n° 043201, p. 1-4 (2006)
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- Authors
- et. al.
- Abstract
- Here we report the first mass spectrometric study of negative ions formed via free electron attachment(EA) to nucleobases (NBs) embedded in helium clusters. Pure and mixed clusters of adenine and thymine have been formed by pickup of isolated NB molecules by cold helium droplets. In contrast to EA of isolated molecules in the gas phase we observe a long-lived parent anion NB(-) and, in addition, parentcluster ions NB(-)(n) up to size n = 6. Moreover, we show that a low energy electron penetrating into a doped helium droplet causes efficient damage of the embedded nucleobases via resonant, site selective,dissociative electron attachment.
- Affiliations
Leopold Franzens Universität Innsbruck Institut fu¨r Ionenphysik und Angewandte Physik and Center for Molecular Biosciences Innsbruck Leopold Franzens Universität Innsbruck Institut für Ionenphysik und Angewandte Physik and Center for Molecular Biosciences Innsbruck
Citations
Denifl, S., & et al. (2006). Mass Spectrometric Investigation of Anions Formed upon Free Electron Attachment to Nucleobase Molecules and Clusters Embedded in Superfluid Helium Droplets. Physical Review Letters, 97(043201), 1-4. https://doi.org/10.1103/PhysRevLett.97.043201 (Original work published 2006)