Femtosecond pump-probe experiments on trapped flavin: optical control of dissociation.
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.
Guyon
Laurent
L
Université de Lyon, Université Lyon 1, CNRS, LASIM, Villeurbanne Cedex, France.
Tabarin
Thibault
T
Thuillier
Benoît
B
Antoine
Rodolphe
R
Broyer
Michel
M
Boutou
Véronique
V
Wolf
Jean-Pierre
JP
Dugourd
Philippe
P
D004307:Dose-Response Relationship, Radiation; D005415:Flavins / Q000737:chemistry* / Q000528:radiation effects*; D008027:Light; D011829:Radiation Dosage
D005415:Flavins