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- W2321822420 endingPage "9045" @default.
- W2321822420 startingPage "9037" @default.
- W2321822420 abstract "A new scaffold for studying photoinduced charge transfer has been constructed by connecting a [Ru(Bpy)3](2+) donor to a bis(8-hydroxyquinolinate)2 copper [CuQ2] acceptor through a peptide nucleic acid (PNA) bridge. The luminescence of the [Ru(Bpy)3](2+*) donor is quenched by electron transfer to the [CuQ2] acceptor. Photoluminescence studies of these donor-bridge-acceptor systems reveal a dependence of the charge transfer on the length and sequence of the PNA bridge and on the position of the donor and acceptor in the PNA. In cases where the [Ru(Bpy)3](2+) can access the π base stack at the terminus of the duplex, the luminescence decay is described well by a single exponential; but if the donor is sterically hindered from accessing the π base stack of the PNA duplex, a distribution of luminescence lifetimes for the donor [Ru(Bpy)3](2+*) is observed. Molecular dynamics simulations are used to explore the donor-PNA-acceptor structure and the resulting conformational distribution provides a possible explanation for the distribution of electron transfer rates." @default.
- W2321822420 created "2016-06-24" @default.
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- W2321822420 date "2014-07-18" @default.
- W2321822420 modified "2023-09-25" @default.
- W2321822420 title "Luminescence Quenching by Photoinduced Charge Transfer between Metal Complexes in Peptide Nucleic Acids" @default.
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- W2321822420 doi "https://doi.org/10.1021/jp5027042" @default.
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