title: Photofragmentation in selected tautomers of protonated adenine.
abstract: The photofragmentation by UV excitation of selectively prepared 1(+) and 3(+) tautomers of protonated adenine is studied after excitation at a 266 and 263 nm wavelengths with two different experimental set-ups located in Seoul and Orsay. While the production of 1(+) tautomers with an electrospray ion source is now well accepted, calculations were used to ascribe the preparation of 3(+) tautomers from cold adenine dimers. The fragmentation patterns are rather similar for both tautomers, suggesting similar mechanisms as a statistical fragmentation in the ground electronic state after internal conversion.
authors.affiliation: Department of Chemistry, Kyung Hee University, Seoul 130-701, Korea.
authors.forename: Nu Ri
authors.initials: NR
authors.lastname: Cheong
authors.forename: Sang Hwan
authors.initials: SH
authors.lastname: Nam
authors.forename: Hye Sun
authors.initials: HS
authors.lastname: Park
authors.forename: Seol
authors.initials: S
authors.lastname: Ryu
authors.forename: Jae Kyu
authors.initials: JK
authors.lastname: Song
authors.forename: Seung Min
authors.initials: SM
authors.lastname: Park
authors.forename: Marie
authors.initials: M
authors.lastname: Pérot
authors.forename: Bruno
authors.initials: B
authors.lastname: Lucas
authors.forename: Michel
authors.initials: M
authors.lastname: Barat
authors.forename: Jacqueline A
authors.initials: JA
authors.lastname: Fayeton
authors.forename: Christophe
authors.initials: C
authors.lastname: Jouvet
mesh_terms: D000225:Adenine / Q000737:chemistry*; D007700:Kinetics; D055668:Photochemical Processes; D011522:Protons; D013237:Stereoisomerism; D014466:Ultraviolet Rays
chemical_list: D011522:Protons; D000225:Adenine