Fluorescence quenching in micelles: A theoretical model for the intramicellar first order quenching rate constant

Considering the fact that in a micellar medium solubilized molecules are mostly present near the surface, a solution of Fick’s diffusion law on a spherical surface is obtained to calculate the rate of diffusion controlled reactions in a micelle. It is shown that transients are small. Corrections are applied for the radial distribution of probe and quencher. The model is extended to reactions slower than diffusion controlled.