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Schlagwörter:
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Zusammenfassung:
The bridged porphyrin 6 was prepared via the bis(dipyrrylmethane) compounds 3, 4 and 5, by demethylation of 6 and oxidation the benzoquinone/porphyrin system 2 was obtained. The strong fluorescence quenching of 2, as compared to 6, is explained on the basis of an electron-transfer from porphyrin to quinone in the S1 state.