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Although various theoretical models of matrix-assisted laser desorption/ionization (MALDI) have been proposed, no model can explain all of the experimentally observed phenomena. It has been reported that water content in the solvent used in the sample preparation has influence on the ion yield of MALDI. However, the previously proposed models do not take account of the solvent. Therefore, we have...
Proton transfer and adduction reaction of matrix molecules in matrix-assisted laser desorption ionization were studied. By using 2,4,6-trihydroxyacetophenone (THAP), 2,5-dihydroxybenzoic acid (DHBA), and their related compounds in which the position of a hydroxyl group is different, it was clarified that a hydroxyl group forming an intramolecular hydrogen bond is related to the ionization of matrix...
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