Protonation of Gly(sub n) homologues in matrix-assisted laser desorption ionization
Article Abstract:
A study was conducted to analyze protonation reactions of Gly(sub n) homologues to determine the effects of peptide chain length and matrix materials on the matrix-assisted laser desorption ionization mechanism. The crystalline layer on the probe surface was heterogeneous and unevenly distributed. The ions were then identified using a dual-microchannel plate. Experimental results indicated that most of the homologues supported an increasing pattern of relative ion yields as a function of peptide lenght.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1998
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Molecular dynamics model of ultraviolet matrix-assisted laser desorption/ionization including ionization processes
Article Abstract:
A molecular dynamics model of ultraviolet matrix-assisted laser desorption/ionization (UV-MALDI) is developed to help understand the interaction between mechanical and reactive processes in the challenging time range during and shortly after the laser pulse. Methods are developed to handle long-range Coulomb forces and the long mean free path of low-energy electrons.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2005
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Time-delayed 2-pulse studies of MALDI matrix ionization mechanisms
Article Abstract:
It has been possible to obtain time-delayed 2-pulse matrix-assisted laser desorption/ionization results for 2,5 dihydroxybenzoic acid matrix ions using 30 ps 355 nm excitation. It was established that at least two ion-formation mechanisms are active.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2000
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