title: Electronic excitation energy transfer between nucleobases of natural DNA.
abstract: Transfer of the electronic excitation energy in calf thymus DNA is studied by time-resolved fluorescence spectroscopy. The fluorescence anisotropy, after an initial decay starting on the femtosecond time scale, dwindles down to ca. 0.1. The in-plane depolarized fluorescence decays are described by a stretched exponential law. Our observations are consistent with one-dimensional transfer mediated by charge-transfer excited states.
authors: CNRS, IRAMIS, SPAM, Laboratoire Francis Perrin, URA 2453, F-91191 Gif-sur-Yvette, France.
authors: Ignacio
authors: I
authors: Vayá
authors: Thomas
authors: T
authors: Gustavsson
authors: Thierry
authors: T
authors: Douki
authors: Yuri
authors: Y
authors: Berlin
authors: Dimitra
authors: D
authors: Markovitsi
mesh_terms: D004247:DNA / Q000737:chemistry*; D004583:Electrons; D004735:Energy Transfer; D005454:Fluorescence Polarization; D013050:Spectrometry, Fluorescence
chemical_list: D004247:DNA