Transmission mode ion/ion proton transfer reactions in a linear ion trap
نویسندگان
چکیده
منابع مشابه
Electron transfer versus proton transfer in gas-phase ion/ion reactions of polyprotonated peptides.
The ion/ion reactions of several dozen reagent anions with triply protonated cations of the model peptide KGAILKGAILR have been examined to evaluate predictions of a Landau-Zener-based model for the likelihood for electron transfer. Evidence for electron transfer was provided by the appearance of fragment ions unique to electron transfer or electron capture dissociation. Proton transfer and ele...
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A linear-geometry, radio-frequency, quadrupole ion trap has been developed to generate, purify, accumulate and study atomic and molecular ions in the gas phase. By employing a trap-based system, both reactant and product ions can be stored for significant time periods, which can both enhance the efficiency of gas-phase reaction processes and create an environment to observe collision products a...
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Gas-phase reactions of singly-charged anions with multiply-protonated peptides, in a RF quadrupole linear ion trap, leads to either peptide deprotonation (proton transfer) or electron deposition (electron transfer). The former process induces peptide backbone cleavage through a reaction scheme analogous to electron capture dissociation (ECD). Here we characterize the preferred reaction pathways...
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While diabatic approaches are ubiquitous for the understanding of electron-transfer reactions and have been mooted as being of general relevance, alternate applications have not been able to unify the same wide range of observed spectroscopic and kinetic properties. The cause of this is identified as the fundamentally different orbital configurations involved: charge-transfer phenomena involve ...
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ژورنال
عنوان ژورنال: Journal of the American Society for Mass Spectrometry
سال: 2007
ISSN: 1044-0305,1879-1123
DOI: 10.1016/j.jasms.2007.02.001