Journal
JOURNAL OF PHYSICAL CHEMISTRY B
Volume 111, Issue 40, Pages 11812-11816Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp070403m
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On the basis of our quantum mechanical calculation, we propose that homogeneous single-stranded adenine bases (Ade-DNA) form helical H aggregates, and the photoexcited states can be described as Frenkel excitons. The calculated excitonic coupling between adjacent transition dipoles is in good agreement with the measured absorption spectrum of 20-base homogeneous adenine stacks that exhibits a blue shift of 2.6 nm relative to that of the monomeric species.
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