New chemical evidence for the ability to generate radical molecular ions of polyenes from ESI and HR-MALDI mass spectrometry
Literature Information
Thais Guaratini, Ricardo L. Vessecchi, Francisco C. Lavarda, Patrícia M. B. G. Maia Campos, Zeki Naal, Paul J. Gates, Norberto P. Lopes
We report here new chemical evidence for the generation of radical molecular ions of compounds with a conjugated π-system (polyene) in ESI and HR-MALDI mass spectrometry. The oxidation potential of the neutral polyenes was calculated by cyclic-voltammetry and the results compared with those previously published for other complex conjugated compounds that have also been shown to form M˙+ in ESI-MS. This study clearly demonstrates the correlation between the oxidation potential and the formation of the M˙+ for the polyenes studied.
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