期刊
EUROPEAN JOURNAL OF MASS SPECTROMETRY
卷 16, 期 3, 页码 341-349出版社
IM PUBLICATIONS
DOI: 10.1255/ejms.1081
关键词
electrospray ionization; emitters; LDI; titanium dioxide nanoparticle; semiconductor; peptide in-source-decay; cysteine tagging; proteomics
Electrochemical or photo-electrochemical reactions in both electrospray ionization and laser desorption ionization are discussed stressing the role of the electrode reaction in influencing the ionization process. In particular, upon application of a high voltage during electrospray ionization, the emitter includes a working electrode, where redox reactions are observed, such as electro-generation of benzoquinone and metal ions. In contrast, the target plate in laser-induced desorption ionization also acts as a photo-electrode, especially when modified with a mesoporous semiconductor. We illustrate here how these electrochemical reactions can be used for tagging purposes and for oxidative or reductive dissociation reactions.
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