2P-27 PDF
Photochemical Reactions of Aminonaphthols caused by Laser Desorption/Ionization
Although matrix-assisted laser desorption/ionization mass spectrometry (MALDI MS) presents a practically useful analytical tool for detecting biological molecules, it is difficult to understand all the events of desorption and ionization processes in MALDI even at present. The most basic phenomenon in the MALDI events is the formation of matrix neutral/ionic species caused by photochemical reactions. Studying the ionization behaviors of matrix chemicals caused by photochemically UV laser is of importance for understanding the ionization of analytes and the matrix selection suitable for analytical purposes. In this study, we report the MALDI-induced photochemical reactions of the 5,1-ANL and the six different isomers of aminonaphthol (ANL).