title: Femtosecond pump-probe experiments on trapped flavin: optical control of dissociation.
abstract: Femtosecond pump-probe experiments are performed on flavin biomolecules isolated in an ion trap. Mass spectra of the photoinduced fragments show that the fragmentation pathways can be modified using two-color two-photon excitation. In particular, when an infrared probe pulse (810 nm) is added subsequent to the first excitation step (excitation of the S(1) state of flavin mononucleotide at 405 nm), branching ratios between lumichrome and lumiflavin production are inverted relative to the single excitation case.
authors.affiliation: Université de Lyon, Université Lyon 1, CNRS, LASIM, Villeurbanne Cedex, France.
authors.forename: Laurent
authors.initials: L
authors.lastname: Guyon
authors.forename: Thibault
authors.initials: T
authors.lastname: Tabarin
authors.forename: Benoît
authors.initials: B
authors.lastname: Thuillier
authors.forename: Rodolphe
authors.initials: R
authors.lastname: Antoine
authors.forename: Michel
authors.initials: M
authors.lastname: Broyer
authors.forename: Véronique
authors.initials: V
authors.lastname: Boutou
authors.forename: Jean-Pierre
authors.initials: JP
authors.lastname: Wolf
authors.forename: Philippe
authors.initials: P
authors.lastname: Dugourd
mesh_terms: D004307:Dose-Response Relationship, Radiation; D005415:Flavins / Q000737:chemistry* / Q000528:radiation effects*; D008027:Light; D011829:Radiation Dosage
chemical_list: D005415:Flavins