Ultrafast Dynamics in DNA-Mediated Electron Transfer: Base Gating and the Role of Temperature

Authors

  • Melanie A. O'Neill,

    1. Laboratory for Molecular Sciences, Arthur Amos Noyes Laboratory of Chemical Physics, California Institute of Technology, Pasadena CA, 91 125, USA, Fax: (+1) 626-792-8456
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  • Hans-Christian Becker,

    1. Laboratory for Molecular Sciences, Arthur Amos Noyes Laboratory of Chemical Physics, California Institute of Technology, Pasadena CA, 91 125, USA, Fax: (+1) 626-792-8456
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  • Chaozhi Wan,

    1. Laboratory for Molecular Sciences, Arthur Amos Noyes Laboratory of Chemical Physics, California Institute of Technology, Pasadena CA, 91 125, USA, Fax: (+1) 626-792-8456
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  • Jacqueline K. Barton,

    1. Laboratory for Molecular Sciences, Arthur Amos Noyes Laboratory of Chemical Physics, California Institute of Technology, Pasadena CA, 91 125, USA, Fax: (+1) 626-792-8456
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  • Ahmed H. Zewail

    1. Laboratory for Molecular Sciences, Arthur Amos Noyes Laboratory of Chemical Physics, California Institute of Technology, Pasadena CA, 91 125, USA, Fax: (+1) 626-792-8456
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  • This work was made possible through the support of the Laboratory for Molecular Sciences and the NSF. M.A.O. and H.-C.B. are grateful to NSERC and the Wenner-Gren Foundation, respectively, for postdoctoral fellowships.

Abstract

original image

Die ultraschnelle Dynamik des Elektronentransfers (ET) zwischen den Basen der DNA wurde bestimmt, um den Einfluss des „Basenpaar-Gatings“ auf der Zeitskala des Elektronentransports und dessen Temperaturabhängigkeit zu untersuchen. ET tritt lediglich in Doppelhelices auf, die eine spezifische Anordnung der Basen haben (siehe Bild). Die Beschreibung der ET-Dynamik muss unter Berücksichtigung der DNA-Basen-Fluktuation erfolgen.

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