Polymer cationization in matrix-assisted laser desorption/ionization

Eur. J. Mass Spectrom. 4, 421–426 (1998)
DOI: 10.1255/ejms.266

Polymer cationization in matrix-assisted laser desorption/ionization

Richard Knochenmuss, Edda Lehmann and Renato Zenobi
Department of Chemistry, Swiss Federal Institute of Technology (ETH), Zürich, Switzerland. E-mail: knochenmuss@org.chem.ethz.ch

ABSTRACT:

Synthetic polymers are most often observed in matrix-assisted laser desorption/ionization mass spectra as cationized molecules. The means by which such ions are created and brought into the gas phase are reviewed, with particular focus on preformed ions and cation-pickup reactions in the desorption plume.

Keywords: MALDI, ionization mechanisms, polymers, preformed ions, plume reactions

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