(a) a surface of the perfluorinated, semicrystalline or amorphous polymer, preferably amorphous, is brought into contact with an aqueous solution containing from 1 nanogram/ml to 10 milligram/ml in concentration of molecules with a function of receptor such as antibodies, or other proteic or peptidic complexes or nucleic acids or lipids or amphiphilic surfactants or block polymers ended with a rec