| Download | - View accepted manuscript: Electronic structure of adenine and thymine base pairs studied by femtosecond electron-ion coincidence spectroscopy (PDF, 645 KiB)
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| DOI | Resolve DOI: https://doi.org/10.1021/jp076800e |
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| Author | Search for: Gador, Niklas1; Search for: Samoylova, Elena; Search for: Smith, Valoris Reid; Search for: Stolow, Albert1; Search for: Rayner, David M.1; Search for: Radloff, Wolfgang; Search for: Hertel, Ingolf Volker; Search for: Schultz, Thomas |
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| Affiliation | - National Research Council of Canada. NRC Steacie Institute for Molecular Sciences
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| Format | Text, Article |
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| Abstract | 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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| Publication date | 2007-10-31 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NPARC number | 12327917 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | db4ea838-d64b-464c-aa0b-a7edab815e24 |
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| Record created | 2009-09-10 |
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| Record modified | 2020-05-10 |
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