Brief Communications Arising
Nature 441, E8 (8 June 2006) | doi:10.1038/nature04904; Published online 7 June 2006
Molecular spectroscopy: Complexity of excited-state dynamics in DNA (Reply)
Carlos E. Crespo-Hernández1, Boiko Cohen1 and Bern Kohler1
We have shown1 that long-lived excited electronic states known as excimers2, which arise from base stacking3, are formed in high yields in a variety of synthetic DNA oligonucleotides. Markovitsi et al.4 question our interpretation, and claim that these states can be accounted for by their exciton theory. However, neither this nor their emission data contradict our finding that in single- and double-stranded A
T (adenine–thymine-paired) DNA, excited states decay through long-lived intermediate states in which excitation is shared by stacked bases.
- Department of Chemistry, The Ohio State University, Columbus, Ohio 43210, USA
Correspondence to: Bern Kohler1 Email: kohler@chemistry.ohio-state.edu
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Molecular spectroscopy Complexity of excited-state dynamics in DNANature Brief Communication (08 Jun 2006)
Base stacking controls excited-state dynamics in A???T DNANature Letters to Editor (25 Aug 2005)