Electron Attachment to "Naked" and Microsolvated Nucleotide Anions: Detection of Long-Lived Dianions

Bo Liu, Shigeo Tomita, Jimmy Rangama, Preben Hvelplund*, Steen Brøndsted Nielsen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

In-flight reduction: In 50 keV collisions between gaseous nucleotide monoanions (e.g., see figure) and sodium vapour, electron transfer from sodium to the anion occurs. Dianions survive the long flight time to the detector (≈ 6 μs) despite being unstable to electron autodetachment. Based on B3LYP6-311 ++ G(2d,p)//PM3 calculations, the electron binding energy of the dianion is negative but becomes positive after internal proton transfer from the sugar to the adenine.

Original languageEnglish
Pages (from-to)1341-1344
Number of pages4
JournalChemPhysChem
Volume4
Issue number12
DOIs
Publication statusPublished - 15 Dec 2003
Externally publishedYes

Keywords

  • DNA damage
  • Electron transfer
  • Mass spectrometry
  • Molecular dianions
  • Nucleutides

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