Issue 12, 2004
From the journal:

Analyst

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

Thais Guaratini,a   Ricardo L. Vessecchi,a   Francisco C. Lavarda,b   Patrícia M. B. G. Maia Campos,a   Zeki Naal,a   Paul J. Gatesc  and  Norberto P. Lopes*a  

* Corresponding authors

a Universidade de São Paulo, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Via do Café S/N, Ribeirão Preto-SP, Brazil
E-mail: npelopes@fcfrp.usp.br
Fax: +55 16 633 29 60
Tel: +55 16 602 41 68

b Universidade Estadual Paulista, Faculdade de Ciências, C.P. 473, Bauru-SP, Brazil

c University of Bristol, School of Chemistry, Cantock's Close, Bristol, UK

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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Article information

DOI
https://doi.org/10.1039/B412154F
Article type
Paper
Submitted
06 Aug 2004
Accepted
24 Sep 2004
First published
22 Oct 2004

Analyst, 2004,129, 1223-1226

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

T. Guaratini, R. L. Vessecchi, F. C. Lavarda, P. M. B. G. Maia Campos, Z. Naal, P. J. Gates and N. P. Lopes, Analyst, 2004, 129, 1223 DOI: 10.1039/B412154F

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