New chemical evidence for the ability to generate radical molecular ions of polyenes from ESI and HR-MALDI mass spectrometry

Literature Information

Publication Date 2004-10-22
DOI 10.1039/B412154F
Impact Factor 4.616
Authors

Thais Guaratini, Ricardo L. Vessecchi, Francisco C. Lavarda, Patrícia M. B. G. Maia Campos, Zeki Naal, Paul J. Gates, Norberto P. Lopes


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Abstract

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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