Photodissociation spectroscopy of trapped protonated tryptophan.
We have coupled a quadrupole ion trap with a frequency doubled optical parametric oscillator laser. The photodissociation spectrum of the protonated tryptophan ion from 215 to 320 nm is reported. The yields of fragmentation on each mass channel as a function of the laser wavelength were obtained. We also report experiments involving multiple stages of laser induced dissociation and discuss possible structures for the fragmentation products.
Talbot
Francis O
FO
Laboratoire de Spectrométrie Ionique et Moléculaire, UMR 5579, Université Lyon I et CNRS, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne cedex, France.
Tabarin
Thibault
T
Antoine
Rodolphe
R
Broyer
Michel
M
Dugourd
Philippe
P
D008401:Gas Chromatography-Mass Spectrometry / Q000295:instrumentation / Q000379:methods*; D008027:Light; D011522:Protons; D021241:Spectrometry, Mass, Electrospray Ionization / Q000295:instrumentation / Q000379:methods*; D014364:Tryptophan / Q000032:analysis* / Q000737:chemistry* / Q000528:radiation effects
D011522:Protons; D014364:Tryptophan