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Photofragmentation in selected tautomers of protonated adenine
Cheong, Nu Ri,Nam, Sang Hwan,Park, Hye Sun,Ryu, Seol,Song, Jae Kyu,Park, Seung Min,Pé,rot, Marie,Lucas, Bruno,Barat, Michel,Fayeton, Jacqueline A.,Jouvet, Christophe Royal Society of Chemistry 2011 Physical chemistry chemical physics Vol.13 No.1
<P>The photofragmentation by UV excitation of selectively prepared 1<SUP>+</SUP> and 3<SUP>+</SUP> 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<SUP>+</SUP> tautomers with an electrospray ion source is now well accepted, calculations were used to ascribe the preparation of 3<SUP>+</SUP> 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.</P> <P>Graphic Abstract</P><P>The UV fragmentation pathway of protonated adenine is independent of the tautomer. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c000961j'> </P>