Within the scope of our research work on the synthesis of chemically defined perfluorinated amphipathic compounds,1.2 we have already reported the synthesis and surfactive proper- ties of different types of structures: perfluoroalkoxyethy- lenes,' ,3 perfluoroalkylamides ,2,4 and perfluorolipopeptides .5 All these compounds allow complex media6 with fluorinated oils (perfluorodecalin for example) and a polar phase (aqueous or other) to be obtained, and in particular micro- ...