期刊
JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY
卷 24, 期 8, 页码 1271-1279出版社
SPRINGER
DOI: 10.1007/s13361-013-0657-2
关键词
Vacuum ultraviolet; Spectroscopy; Polysaccharides; Gas phase; Fragmentation; Mass spectrometry
资金
- Agence Nationale de la Recherche Scientifique, France [ANR-08-BLAN-0065]
- [20110002]
We studied the optical properties of gas-phase polysaccharides (maltose, maltotetraose, and maltohexaose) ions by action spectroscopy using the coupling between a quadrupole ion trap and a vacuum ultraviolet (VUV) beamline at the SOLEIL synchrotron radiation facility (France) in the 7 to 18 eV range. The spectra provide unique benchmarks for evaluation of theoretical data on electronic transitions of model carbohydrates in the VUV range. The effects of the nature of the charge held by polysaccharide ions on the relaxation processes were also explored. Finally the effect of isomerization of polysaccharides (with melezitose and raffinose) on their photofragmentation with VUV photons is presented.
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