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Citation: Xu Si-Chuan, Ai Xi-Cheng, Feng Juan, Zhang Ru-Bo, Zhang Qi-Yuan, Zhang Xing-Kang. Superexchange Mechanism of Charge Transfer in Supermolecular Assemblies[J]. Acta Physico-Chimica Sinica, ;2002, 18(07): 640-643. doi: 10.3866/PKU.WHXB20020715 shu

Superexchange Mechanism of Charge Transfer in Supermolecular Assemblies

1.
State Key Laboratory for Structural Chemistry of Unstable and Stable Species,Molecular Science Center,Institute of Chemistry,Chinese Academy of Sciences,Beijing　100080

Received Date: 20 November 2001
Available Online: 15 July 2002

The investigation on charge migration mechanism in double helix DNA is an important current issue extensively studied in the overlapping field of chemistry and biology.We have designed and synthesized a series of supermolecular assemblies of double helix DNA to study charge migration mechanism in DNA by measuring Ap fluorescence and its relative fluorescence quantum yield.Experimentaly,we have distinguished and observed superexchange mechanism of charge transfer in the supermolecular assemblies of double helix DNA,which plays a role in DNA for short distance; but hopping mechanism may be exhibited by the phonon-assisted polaron-like hopping migration.
- DNA;Ap;Superexchange mechanism;Hopping mechanism
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