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Issue 34, 2011
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Electron transfer-induced fragmentation of thymine and uracil in atom–molecule collisions

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Abstract

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.

Graphical abstract: Electron transfer-induced fragmentation of thymine and uracil in atom–molecule collisions

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Publication details

The article was received on 27 Apr 2011, accepted on 08 Jul 2011 and first published on 27 Jul 2011


Article type: Paper
DOI: 10.1039/C1CP21340G
Citation: Phys. Chem. Chem. Phys., 2011,13, 15657-15665
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    Electron transfer-induced fragmentation of thymine and uracil in atom–molecule collisions

    D. Almeida, R. Antunes, G. Martins, S. Eden, F. Ferreira da Silva, Y. Nunes, G. Garcia and P. Limão-Vieira, Phys. Chem. Chem. Phys., 2011, 13, 15657
    DOI: 10.1039/C1CP21340G

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