Article the surface of which is treated with a coupling agent of the following general formula: - each R 1, independent from one another, and identical or different from one another in each instance, is selected from the group consisting in a bond, (CR 5 R 6) n where each R 5 and R 6, identical or different from one another, are independently selected from the group consisting in H, an alkyl group comprising 1-10 carbon atoms, which is optionally substituted by at least one halogen atom, an aryl group or an aralkyl group, n being comprised between 1 and 50, and a polyalkylene oxide having 1 to 100 repeats of alkylene oxide units; - each R', independent from one another, and identical or different from one another in each instance, is selected from the group consisting in a bond, (CR 5 R 6) n where each R 5 and R 6, identical or different from one another, are independently selected from the group consisting in H, an alkyl group comprising 1-10 carbon atoms, which is optionally substituted by at least one halogen atom, an aryl group or an aralkyl group, n being comprised between 1 and 50; - each R 2, independent from one another, and identical or different in each instance, is selected from a group consisting in a bond, (CH 2) n, O, S, S-S, NH, O, O, NH, NH NH, NH-CS-NH, NH O, NH O, S, S, and n is comprised between 1 and 100; - each R 3, identical of different from one another, is selected from the group consisting in a perfluoroalkyl group having 1 to 50 carbon atoms, (CF(CF 3)CF 2 O) n (CF 2) 2 CF 3, (CF 2 CF(CF 3)O) n (CF 2) 2 CF 3, (CF 2 CF 2 CF 2 O) n (CF 2) 2 CF 3 and (CF 2 CF 2 O) n (CF 2)CF 3 and n is between 0 and 100; - each R 4, identical or different from one another, is selected from the group consisting in H, an alkyl group containing 1 to 10 carbon atoms, which is optionally substituted by at least one halogen atom, an aryl group or an aralkyl group, preferably each R 4 is H; - T is a bond, (CH 2) n, O, S, S-S, NH, O, O, NH, NH NH, NH-CS-NH, NH O, NH O, S, S, and n is comprised between 1 and 100; - each F and F', independent from one another, and identical or different from one another in each instance, are selected from the group consisting in PO 3 H 2, OPO 3 H 2, SH and SiX3, X=H, Cl, OMe, OEt, OiPr, preferably PO 3 H 2. - each R 1, independent from one another, and identical or different from one another in each instance, is selected from the group consisting in a bond, (CR 5 R 6) n where each R 5 and R 6, identical or different from one another, are independently selected from the group consisting in H, an alkyl group comprising 1-10 carbon atoms, which is optionally substituted by at least one halogen atom, an aryl group or an aralkyl group, n being comprised between 1 and 50, and a polyalkylene oxide having 1 to 100 repeats of alkylene oxide units; - each R', independent from one another, and identical or different from one another in each instance, is selected from the group consisting in a bond, (CR 5 R 6) n where each R 5 and R 6, identical or different from one another, are independently selected from the group consisting in H, an alkyl group comprising 1-10 carbon atoms, which is optionally substituted by at least one halogen atom, an aryl group or an aralkyl group, n being comprised between 1 and 50; - each R 2, independent from one another, and identical or different in each instance, is selected from a group consisting in a bond, (CH 2) n, O, S, S-S, NH, O, O, NH, NH NH, NH-CS-NH, NH O, NH O, S, S, and n is comprised between 1 and 100; - each R 3, identical of different from one another, is selected from the group consisting in a perfluoroalkyl group having 1 to 50 carbon atoms, (CF(CF 3)CF 2 O) n (CF 2) 2 CF 3, (CF 2 CF(CF 3)O) n (CF 2) 2 CF 3, (CF 2 CF 2 CF 2 O) n (CF 2) 2 CF 3 and (CF 2 CF 2 O) n (CF 2)CF 3 and n is between 0 and 100; - each R 4, identical or different from one another, is selected from the group consisting in H, an alkyl group containing 1 to 10 carbon atoms, which is optionally substituted by at least one halogen atom, an aryl group or an aralkyl group, preferably each R 4 is H; - T is a bond, (CH 2) n, O, S, S-S, NH, O, O, NH, NH NH, NH-CS-NH, NH O, NH O, S, S, and n is comprised between 1 and 100; - each F and F', independent from one another, and identical or different from one another in each instance, are selected from the group consisting in PO 3 H 2, OPO 3 H 2, SH and SiX3, X=H, Cl, OMe, OEt, OiPr, preferably PO 3 H 2.