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Vacuum Ultraviolet Action Spectroscopy of Polysaccharides |
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| Authors: | Quentin Enjalbert Claire Brunet Arnaud Vernier Abdul-Rahman Allouche Rodolphe Antoine Philippe Dugourd Jérôme Lemoine Alexandre Giuliani Laurent Nahon |
| Institution: | 1. Université Lyon 1-CNRS, Université de Lyon, 69622, Villeurbanne cedex, France 2. UMR5306, Institut Lumière Matière, Villeurbanne, France 3. UMR5180, Sciences Analytiques, Villeurbanne, France 4. R&D Proteomique, bioMérieux SA, 69280, Marcy l’Etoile, France 5. SOLEIL, l’Orme des Merisiers, St Aubin, BP48, , 91192, Gif sur Yvette Cedex, France 6. UAR1008, Cepia, Institut National de la Recherche Agronomique (INRA), BP 71627, 44316, Nantes Cedex 3, France |
| Abstract: | 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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