Intermicellar exchange dynamics of solubilized reactants

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Abstract

In an aqueous micellar detergent solution, both components of the system, triplet 1-bromonaphthalene and quencher pyrene, are solubilized almost exclusively in different micelles. The kinetics are investigated by phosphorescence at room temperature using a phosphoroscope technique. The encounter takes place mainly via solubilisate exit from a micelle into the bulk water phase followed by its rapid entrance into another micelle, which may or may not contain the other component of the system. Even in the absence of a quencher, the lifetime of the triplet depends on the detergent concentration, since phosphorescence is emitted only from inside a micelle, whilst in the water phase radiationless decay predominates.

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