the present invention concerns a method for preparing an organic copolymer film on electrically conductive or semi - conductive surfaces in two steps . the first step includes electrolysis of an electrolytic solution containing an adhesion primer , in contact with a surface . the second step corresponds to the reaction , at the surface obtained previously , of a solution containing the following species : a protic solvent , and a “ radically polymerizable ” monomer . the polymerizable monomer is solubilized in micellar form . the surfaces obtained with the use of this method , and their applications apply to preparation of microelectronic components , biomedical devices or screening kits , as well as kits for preparing an organic copolymer film on an electrically conductive or semi - conductive surface .