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Potassium-uracil/thymine ring cleavage enhancement as studied in electron transfer experiments and theoretical calculations

Journal Article


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Abstract


  • We report experimental and theoretical studies on ring cleavage enhancement in collisions of

    potassium atoms with uracil/thymine in order to further increase the understanding of the

    complex mechanisms yielding such fragmentation pathways. In these electron transfer

    processes time-of-flight (TOF) negative ion mass spectra were obtained in the collision

    energy range 13.5 – 23.0 eV. We note that CNO– is the major ring breaking anion formed and

    its threshold formation is discussed within the collision energy range studied. Such

    decomposition process is supported by the first theoretical calculations in order to clarify how

    DNA/RNA pyrimidine bases fragmentation is enhanced in electron transfer processes

    yielding ion-pair formation.

UOW Authors


  •   Almeida, Diego T. (external author)
  •   Da Silva, F. Ferreira (external author)
  •   Limao-Vieira, Paulo (external author)
  •   Bacchus-Montabonel, Marie-Christine (external author)
  •   Garcia, Gustavo

Publication Date


  • 2014

Citation


  • Almeida, D., Bacchus-Montabonel, M., da Silva, F. Ferreira., García, G. & Limão-Vieira, P. (2014). Potassium-uracil/thymine ring cleavage enhancement as studied in electron transfer experiments and theoretical calculations. The Journal of Physical Chemistry Part A: Molecules, Spectroscopy, Kinetics, Environment and General Theory, 118 (33), 6547-6552.

Scopus Eid


  • 2-s2.0-84906497598

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=3387&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/2378

Has Global Citation Frequency


Number Of Pages


  • 5

Start Page


  • 6547

End Page


  • 6552

Volume


  • 118

Issue


  • 33

Abstract


  • We report experimental and theoretical studies on ring cleavage enhancement in collisions of

    potassium atoms with uracil/thymine in order to further increase the understanding of the

    complex mechanisms yielding such fragmentation pathways. In these electron transfer

    processes time-of-flight (TOF) negative ion mass spectra were obtained in the collision

    energy range 13.5 – 23.0 eV. We note that CNO– is the major ring breaking anion formed and

    its threshold formation is discussed within the collision energy range studied. Such

    decomposition process is supported by the first theoretical calculations in order to clarify how

    DNA/RNA pyrimidine bases fragmentation is enhanced in electron transfer processes

    yielding ion-pair formation.

UOW Authors


  •   Almeida, Diego T. (external author)
  •   Da Silva, F. Ferreira (external author)
  •   Limao-Vieira, Paulo (external author)
  •   Bacchus-Montabonel, Marie-Christine (external author)
  •   Garcia, Gustavo

Publication Date


  • 2014

Citation


  • Almeida, D., Bacchus-Montabonel, M., da Silva, F. Ferreira., García, G. & Limão-Vieira, P. (2014). Potassium-uracil/thymine ring cleavage enhancement as studied in electron transfer experiments and theoretical calculations. The Journal of Physical Chemistry Part A: Molecules, Spectroscopy, Kinetics, Environment and General Theory, 118 (33), 6547-6552.

Scopus Eid


  • 2-s2.0-84906497598

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=3387&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/2378

Has Global Citation Frequency


Number Of Pages


  • 5

Start Page


  • 6547

End Page


  • 6552

Volume


  • 118

Issue


  • 33