Almeida, D.; Antunes, R.; Martins, G.; Eden, S.; Ferreira da Silva, F.; Nunes, Y.; Garcia, G. and Limão-Vieira, P.
Electron transfer-induced fragmentation of thymine and uracil in atom-molecule collisions.
Physical Chemistry Chemical Physics, 13(34),
Ion-pair formation has been studied in hyperthermal (30–100 eV) neutral potassium collisions with gas phase thymine (C5H6N2O2) and uracil (C4H4N2O2). Negative ions formed by electron transfer from the alkali atom to the target molecule were analysed by time-of-flight (TOF) mass spectrometry. The most abundant product anions are assigned to CNO− and (U–H)−/(T–H)− and the associated electron transfer mechanisms are discussed. Special emphasis is given to the enhancement of ring breaking pathways in the present experiments, notably CNO− formation, compared with free electron attachment measurements.
||2011 The Owner Societies
||Portuguese Foundation for Science and Technology (FCT-MCTES), EPSRC Life Sciences Interface Fellowship, FP7 Marie Curie Reintegration Grant (ERG), ITS-LEIF exchange program, Spanish–Portuguese Project HP2006-0042, Ministerio de Ciencia e Innovación (project FIS2009-10245), British Council Treaty of Windsor program
||Science > Physical Sciences
|Interdisciplinary Research Centre:
||Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)
||20 Jan 2012 13:56
||26 Nov 2012 19:24
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