Photofragmentation of Halogenated Pyrimidine Molecules in the VUV Range (Articolo in rivista)

Type
Label
  • Photofragmentation of Halogenated Pyrimidine Molecules in the VUV Range (Articolo in rivista) (literal)
Anno
  • 2014-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1007/s13361-013-0783-x (literal)
Alternative label
  • Castrovilli MC, Bolognesi P, Cartoni A, Catone D, O'Keeffe P, Casavola AR, Turchini S, Zema N, Avaldi L. (2014)
    Photofragmentation of Halogenated Pyrimidine Molecules in the VUV Range
    in Journal of the American Society for Mass Spectrometry
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Castrovilli MC, Bolognesi P, Cartoni A, Catone D, O'Keeffe P, Casavola AR, Turchini S, Zema N, Avaldi L. (literal)
Pagina inizio
  • 351 (literal)
Pagina fine
  • 367 (literal)
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  • La commessa MD.P03.030.001 nel 2014 è passata dell'IMIP all'ISM (literal)
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  • http://link.springer.com/article/10.1007%2Fs13361-013-0783-x (literal)
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  • 25 (literal)
Rivista
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  • 3 (literal)
Note
  • Scopu (literal)
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  • CNR-IMIP, Area della Ricerca di Roma 1, Monterotondo Scalo, Italy Dipartimento di Chimica G. Ciamician, Università di Bologna, Bologna, Italy Dipartimento di Chimica e Tecnologie del Farmaco, Università degli Studi di Roma Sapienza, Rome, Italy CNR-ISM, Area della Ricerca di Roma 2, Roma, Italy (literal)
Titolo
  • Photofragmentation of Halogenated Pyrimidine Molecules in the VUV Range (literal)
Abstract
  • In the present work, we studied the photoinduced ion chemistry of the halogenated pyrimidines, a class of prototype radiosensitizing molecules, in the energy region 9-15 eV. The work was stimulated by previous studies on inner shell site-selective fragmentation of the pyrimidine molecule, which have shown that the fragmentation is governed by the population/formation of specific ionic states with a hole in valence orbitals, which in turn correlate to accessible dissociation limits. The combined experimental and theoretical study of the appearance energies of the main fragments provides information on the geometric structure of the products and on the role played by the specific halogen atom and the site of halogenation in the dissociation process. This information can be used to gain new insights on the elementary mechanisms that could possibly explain the enhanced radiation damage to the DNA bases or to the medium in which the bases are embedded, thereby contributing to their radiosensitizing effect. (literal)
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