Effects of heavy-atom substituents on matrices used for matrix-assisted laser desorption-Ionization mass spectrometry.
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The data reported show that heavy-atom substitution on matrices that are used for matrix-assisted laser desorption-ionization mass spectrometry enhance [M + H](+) ion yields of both Leu-enkephalin and vitamin B12. Heavy-atom substitution alters the excited state relaxation dynamics of the matrices as indicated by measured decreases in the measured luminescence (fluorescence and/or phosphorescence) observed for heavy atoms that contain matrices relative to the nonheavy-atom-substituted matrices. The results presented are consistent with the direct involvement of an electronically excited state of the matrix in the formation of analyte [M + H](+) ions.
author list (cited authors)
Preston Schaffter, L. M., Kinsel, G. R., & Russell, D. H.
complete list of authors
Preston Schaffter, LM||Kinsel, GR||Russell, DH