title: Vacuum ultraviolet action spectroscopy of polysaccharides.
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.
authors.affiliation: Université Lyon 1-CNRS, Université de Lyon, 69622, Villeurbanne cedex, France.
authors.forename: Quentin
authors.initials: Q
authors.lastname: Enjalbert
authors.forename: Claire
authors.initials: C
authors.lastname: Brunet
authors.forename: Arnaud
authors.initials: A
authors.lastname: Vernier
authors.forename: Abdul-Rahman
authors.initials: AR
authors.lastname: Allouche
authors.forename: Rodolphe
authors.initials: R
authors.lastname: Antoine
authors.forename: Philippe
authors.initials: P
authors.lastname: Dugourd
authors.forename: Jérôme
authors.initials: J
authors.lastname: Lemoine
authors.forename: Alexandre
authors.initials: A
authors.lastname: Giuliani
authors.forename: Laurent
authors.initials: L
authors.lastname: Nahon
mesh_terms: D002240:Carbohydrate Sequence; D006027:Glycosides / Q000737:chemistry; D007536:Isomerism; D008969:Molecular Sequence Data; D010777:Photochemistry; D011134:Polysaccharides / Q000032:analysis*; D013056:Spectrophotometry, Ultraviolet; D017356:Synchrotrons; D014618:Vacuum
chemical_list: D006027:Glycosides; D011134:Polysaccharides