THEORETICAL-STUDY OF THE DIFFUSION OF LARGE MOLECULES IN MICRO-HETEROGENEOUS MEDIA - THE SMOLUCHOVSKI APPROACH

The possibility of extracting the initial location of probe molecules in a micelle from the dynamics of their diffusion towards the interfac e has been studied. Advantages and drawbacks of the simulation of this dynamics with a Smoluchovski-type equation are discussed on the examp le of bianthryl in a cetyl trimethyl ammonium chloride micelle. It app ears that the size and shape of the domain where the extinction of the probe molecules occurs, has a critical role in this approach. Its acc urate knowledge is a prerequisite to any precise determination of the initial location of the probes.