| Téléchargement | - Voir le manuscrit accepté : Electronic structure of adenine and thymine base pairs studied by femtosecond electron-ion coincidence spectroscopy (PDF, 645 Kio)
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| DOI | Trouver le DOI : https://doi.org/10.1021/jp076800e |
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| Auteur | Rechercher : Gador, Niklas1; Rechercher : Samoylova, Elena; Rechercher : Smith, Valoris Reid; Rechercher : Stolow, Albert1; Rechercher : Rayner, David M.1; Rechercher : Radloff, Wolfgang; Rechercher : Hertel, Ingolf Volker; Rechercher : Schultz, Thomas |
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| Affiliation | - Conseil national de recherches du Canada. Institut Steacie des sciences moléculaires du CNRC
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| Format | Texte, Article |
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| Résumé | Femtosecond pump−probe spectroscopy was combined with photoelectron−photoion coincidence detection to investigate the electronic structure and dynamics of isolated adenine (A) and thymine (T) dimers and the adenine−thymine (AT) base pair. The photoelectron spectra show that ππ* and nπ* states are only weakly perturbed in the hydrogen-bound dimers as compared to the monomers. For cationic base pairs with internal energies greater than 1 eV, we observed considerable cluster fragmentation into protonated monomers. This process selectively removed signals from the nπ* → n-¹ ionization channel in all dimers. The photoelectron spectra are compared to time-resolved mass spectra and confirm the assignment of short-lived ππ* and nπ* populations in the adenine, thymine, and mixed AT dimers. |
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| Date de publication | 2007-10-31 |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Numéro NPARC | 12327917 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | db4ea838-d64b-464c-aa0b-a7edab815e24 |
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| Enregistrement créé | 2009-09-10 |
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| Enregistrement modifié | 2020-05-10 |
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