title: Sub-microsecond photodissociation pathways of gas phase adenosine 5'-monophosphate nucleotide ions.
abstract: The sub-microsecond dissociation pathways for the protonated and deprotonated forms of adenosine 5'-monophosphate were probed in the gas phase using a linear time of flight spectrometer. The studies show two dissociation pathways for the AMP ions indicating dominant ergodic pathways in the photodissociation of these species. The photofragmentation was determined to be a single photon process for the AMP ions. Photodetachment of the AMP anion excited at 266 nm was not observed, leaving dissociation as the prominent pathway for relaxation of the excess energy in the biomolecule. The photofragments were analysed at the electrostatic ion storage ring (ELISA) and found to be similar to collision induced fragments in the case of anions but different in the case of cations.
authors.affiliation: Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C, Denmark.
authors.forename: G
authors.initials: G
authors.lastname: Aravind
authors.forename: R
authors.initials: R
authors.lastname: Antoine
authors.forename: B
authors.initials: B
authors.lastname: Klaerke
authors.forename: J
authors.initials: J
authors.lastname: Lemoine
authors.forename: A
authors.initials: A
authors.lastname: Racaud
authors.forename: D B
authors.initials: DB
authors.lastname: Rahbek
authors.forename: J
authors.initials: J
authors.lastname: Rajput
authors.forename: P
authors.initials: P
authors.lastname: Dugourd
authors.forename: L H
authors.initials: LH
authors.lastname: Andersen
mesh_terms: D000249:Adenosine Monophosphate / Q000737:chemistry*; D005740:Gases / Q000737:chemistry*; D009010:Monte Carlo Method; D010777:Photochemistry; D055672:Static Electricity
chemical_list: D005740:Gases; D000249:Adenosine Monophosphate