Oxidation of Ferrocene Derivatives in Desorption/Ionization on Porous Silicon
Open Access
- 12 December 2005
- journal article
- Published by Springer Nature in Analytical Sciences
- Vol. 21 (12) , 1449-1451
- https://doi.org/10.2116/analsci.21.1449
Abstract
In matrix-assisted laser desorption/ionization (MALDI), the true molecular structures of some analytes are not represented by the observed ions due to a redox reaction. In earlier reports, electron transfer from analyte to chemical matrix has been proposed for the oxidation of ferrocene derivatives in MALDI. To address such a redox phenomenon in laser desorption/ionization processes, two ferrocene derivatives, FcCH2CH2Fc and FcCH2NMe2 [Fc:(CsHs)Fe(CsH4)], were analyzed by a matrix-free method, desorption/ionization on porous silicon (DIOS). The oxidized species, Fc+CH2NMe2 and FcCH2CH2Fc+, were detected in the DIOS mass spectra. The results suggested that electron transfer from the analytes to the sample target occurs during the ionization process.Keywords
This publication has 45 references indexed in Scilit:
- Reduction of organic dyes in matrix‐assisted laser desorption/ionization and desorption/ionization on porous siliconRapid Communications in Mass Spectrometry, 2004
- Mass spectrometric analysis of low molecular mass polyesters by laser desorption/ionization on porous siliconJournal of Mass Spectrometry, 2004
- Decomposition of protein nitrosothiolsin matrix‐assisted laser desorption/ionization and electrospray ionization mass spectrometryJournal of Mass Spectrometry, 2003
- Matrix-assisted ultraviolet laser desorption of non-volatile compoundsPublished by Elsevier ,2001
- Direct assay of Aplysia tissues and cells with laser desorption/ionization mass spectrometry on porous siliconJournal of Mass Spectrometry, 2001
- On the mechanism of laser-induced desorption–ionization of organic compounds from etched silicon and carbon surfacesThe Journal of Chemical Physics, 2001
- Influence of ionization energy on charge-transfer ionization in matrix-assisted laser desorption/ionization mass spectrometryAnalytica Chimica Acta, 1999
- Ion formation in MALDI mass spectrometryMass Spectrometry Reviews, 1998
- Kinetics and thermodynamics of protonation of ferrocene in the gas phaseThe Journal of Physical Chemistry, 1988
- Laser desorption ionization of proteins with molecular masses exceeding 10,000 daltonsAnalytical Chemistry, 1988