Charge reversal fourier transform ion cyclotron resonance mass spectrometry

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[1] Lobodin, Vladislav V.
[2] Savory, Joshua J.
[3] Kaiser, Nathan K.
[4] Dunk, Paul W.
[5] 1,Marshall, Alan G.
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Marshall, A.G. (marshall@magnet.fsu.edu) | 1600年 / Springer Science and Business Media, LLC卷 / 24期
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We report the first charge reversal experiments performed by tandem-in-time rather than tandem-in-space MS/MS. Precursor odd-electron anions from fullerene C60, and even-electron ions from 2,7-di-tert-butylfluorene-9- carboxylic acid and 3,3′-bicarbazole were converted into positive product ions (-CR+) inside the magnet of a Fourier transform ion cyclotron resonance mass spectrometer. Charge reversal was activated by irradiating precursor ions with high energy electrons or UV photons: the first reported use of those activation methods for charge reversal. We suggest that high energy electrons achieve charge reversal in one step as double electron transfer, whereas UV-activated -CR+ takes place stepwise through two single electron transfers and formally corresponds to a neutralization-reionization (-NR+) experiment.[Figure not available: see fulltext.] © 2012 American Society for Mass Spectrometry;
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