Polymer cationization in matrix-assisted laser desorption/ionization

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Eur. J. Mass Spectrom. 4, 421 - 426 (1998)

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:

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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