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- W2079863094 abstract "The intramolecular photoinduced charge separation within two oligo(p-phenylene vinylene) fulleropyrrolidine dyads with three and four phenyl rings $({mathrm{OPV}3ensuremath{-}mathrm{C}}_{60}$ and ${mathrm{OPV}4ensuremath{-}mathrm{C}}_{60})$ is investigated with femtosecond pump-probe spectroscopy in solvents of different polarity. Photoexcitation of the OPV moiety of these dyads results in an ultrafast singlet-energy transfer reaction to create the fullerene singlet excited state with a time constant of 190 fs, irrespective of the polarity of the medium. In a polar solvent, intramolecular electron transfer occurs from the OPV moiety to the ${mathrm{C}}_{60}$ moiety with a time constant of 10--13 ps as a secondary reaction, subsequent to the ultrafast singlet-energy transfer. The charge-separated state has a lifetime of 50--90 ps and recombines to the ground state." @default.
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- W2079863094 date "2001-07-26" @default.
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- W2079863094 title "Two-step mechanism for the photoinduced intramolecular electron transfer in oligo(<i>p</i>-phenylene vinylene)-fullerene dyads" @default.
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- W2079863094 doi "https://doi.org/10.1103/physrevb.64.075206" @default.
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