Abstract
The {pi}-stacked base pairs of B-form DNA provide a unique medium for the investigation of electron transfer. Most recent investigations of the dynamics of photoinduced electron transfer in DNA have employed probe chromophores that are {pi}-stacked with an adjacent base pair. The approach has been to use organic chromophores as linkers in hairpin-forming bis(oligo-nucleotide) conjugates. A hairpin structure in which the organic chromophore is approximately coplanar with the adjacent base pair is supported by spectroscopic studies, molecular modeling, and crystallography.
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