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Updated: Aug 22, 2026

Uracil-DNA Glycosylase Assay by Matrix-assisted Laser Desorption/Ionization Time-of-flight Mass Spectrometry Analysis
Published on: April 22, 2022
H- desorption from uracil via metastable electron capture
A Grandi1, F A Gianturco, N Sanna
1Department of Chemistry, The University of Rome "La Sapienza" and INFM Piazzale A. Moro 5, 00185 Rome, Italy.
Abstract:
In this Letter we report an analysis of the quantum dynamics for the scattering of slow electrons off uracil molecules, leading to the formation of a trapped, metastable anionic state at around 9 eV of energy. This resonant state is seen to be capable of describing an anionic molecular precursor which can explain the desorption of the H- species observed in experiments on film deposited uracil samples.
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