Radical-pair disproportionation through sequential electron–proton transfer (Polanyi's harpoon) is one efficient mechanism leading to quenching fluorescence of n,π*-excited states by hydrogen donors. This mechanism is demonstrated by ab initio MS-CASPT2 calculations and experimental investigations (photoproduct studies and EPR spin-trapping experiments) on the quenching of singlet-excited azoalkanes by chlorinated hydrocarbons.
Sinicropi, A., Pogni, R., Basosi, R., Robb, M.A., Gramlich, G., Nau, W.M., et al. (2001). Fluorescence Quenching by SequentialHydrogen, Electron, and Proton Transfer in theProximity of a Conical Intersection. ANGEWANDTE CHEMIE. INTERNATIONAL EDITION, 40(22), 4185-4189 [10.1002/1521-3773(20011119)40:22<4185::AID-ANIE4185>3.0.CO;2-Y].
Fluorescence Quenching by SequentialHydrogen, Electron, and Proton Transfer in theProximity of a Conical Intersection
SINICROPI, ADALGISA;POGNI, REBECCA;BASOSI, RICCARDO;OLIVUCCI, MASSIMO
2001-01-01
Abstract
Radical-pair disproportionation through sequential electron–proton transfer (Polanyi's harpoon) is one efficient mechanism leading to quenching fluorescence of n,π*-excited states by hydrogen donors. This mechanism is demonstrated by ab initio MS-CASPT2 calculations and experimental investigations (photoproduct studies and EPR spin-trapping experiments) on the quenching of singlet-excited azoalkanes by chlorinated hydrocarbons.
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https://hdl.handle.net/11365/3238
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