Development of laser-ion beam photodissociation methods. Progress report, December 1991--November 1994 Page: 2 of 19
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This project emphasizes the development of laser mass spectrometry methods for
fundamental and applied studies of gas-phase processes. The current studies are
focussed on the photochemistry and photophysics of peptides and other biological
molecules. Matrix-assisted laser desorption ionization (MALDI) is used to produce
ions that are subsequently subjected to photoexcitation and dissociation. MALDI is
still very much in the developmental stages, thus a significant portion of our
research focusses on fundamental studies of the MALDI ion formation/energy
transfer process. Our view is that excited state H+-transfer reactions play an
important role in MALDI, consequently a significant portion of our research
activities are focussed on such studies. Fundamental studies of the role of the
matrix in MALDI are an integral part of this project. A new MALDI experiment,
MALDI of aerosol particles generated from solutions, has been demonstrated and
new developmental research in this area is planned. We are also actively pursuing
a research program on gas-phase H+-transfer processes that mimic the MALDI
process. In addition, we are developing photodissociation experiments, based on
tandem time-of-flight mass spectrometers, for structural characterization of complex
organic molecules. The photodissociation studies use MALDI as the ionization
method. These research areas involve the development of new instrumentation,
new instrument methodologies, and data processing.
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Russell, D. H. Development of laser-ion beam photodissociation methods. Progress report, December 1991--November 1994, report, June 1, 1994; College Station, Texas. (https://digital.library.unt.edu/ark:/67531/metadc692872/m1/2/: accessed May 19, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.