Abstract
Various decay models for luminescence quenching in organized assemblies have been derived in relation with the dimensionality and the effective microviscosity of the reaction medium. It has been shown that the most general models should involve the fractal or the spectral dimension of the reaction medium. A decay model has been derived for each major category where organized assemblies may belong. The theory has been successfully tested on some water‐in‐oil microemulsions below and at the percolation threshold.