title: Fragmentation of deuterated rhodamine B derivates by laser and collisional activation in an FT-ICR mass spectrometer.
abstract: Xanthene dyes such as rhodamine B undergo an interesting mass-spectrometric fragmentation reaction that eliminates small neutral alkanes such as propane. This fragmentation reaction has been investigated in a Fourier transform ion cyclotron mass spectrometer by means of laser photodissociation with visible light as well as by collision-induced dissociation. Different isotopically labeled decarboxyrhodamine B compounds were used to investigate the fragmentation mechanism. The results support a concerted mechanism for the formation of the alkanes instead of a two-step radical mechanism.
authors.affiliation: Institute for Physical Chemistry, Christian Albrechts University at Kiel, Max-Eyth-Str. 1, 24118 Kiel, Germany.
authors.forename: Jonathan
authors.initials: J
authors.lastname: Peters
authors.forename: Martin
authors.initials: M
authors.lastname: Clemen
authors.forename: Jürgen
authors.initials: J
authors.lastname: Grotemeyer
mesh_terms: D000473:Alkanes / Q000737:chemistry*; D017357:Cyclotrons; D003903:Deuterium / Q000737:chemistry; D005456:Fluorescent Dyes / Q000737:chemistry*; D005583:Fourier Analysis; D007477:Ions / Q000737:chemistry; D007834:Lasers; D008027:Light; D013058:Mass Spectrometry; D012235:Rhodamines / Q000737:chemistry*
chemical_list: D000473:Alkanes; D005456:Fluorescent Dyes; D007477:Ions; D012235:Rhodamines; D003903:Deuterium; C029773:rhodamine B