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- W1966789021 abstract "The quenching of photoexcited porphyrins by porphyrin cation radicals at adjacent or distant sites in diphenylethyne-linked porphyrin dyads and triads has been studied using static and time-resolved optical spectroscopy. The excited-state quenching is highly efficient in all cases (>99%) and occurs in ⩽11 ps between adjacent sites (by through-bond energy/charge transfer) and in ⩽55 ps between distant sites (likely by superexchange-assisted energy transfer). The rates can be tuned using the porphyrin-linker connection motif. These results should prove useful in the design of arrays that use electro- or photo-chemically generated porphyrin cation radicals for molecular switching and other applications in molecular photonics." @default.
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- W1966789021 date "2001-06-01" @default.
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- W1966789021 title "Quenching of porphyrin excited states by adjacent or distant porphyrin cation radicals in molecular arrays" @default.
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- W1966789021 doi "https://doi.org/10.1016/s0009-2614(01)00452-3" @default.
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