This project focus on a electron transfer reaction and its integration in a liquid-liquid interface. To do so we studied the synthesis of different dyes such as the Perylene, Perixanthene xanthene and the Naphthalimides. We then aplied these dyes in an interface between two liquids, either the complex emulsion of hexane/fluorohexane/water or a water/micellar interface. We finished with a study of a electron transfer model reaction in the interface using the dyes as photocatalysts.