EP1500151-A2  AUDEBERT P ET AL: "REDOX AND CONDUCTING POLYMERS BASED ON SALEN-TYPE METAL UNITS; ELECTROCHEMICAL STUDY AND SOME CHARACTERISTICS" NEW JOURNAL OF CHEMISTRY, CNRS-GAUTHIER-VILLARS, MONTROUGE.; FR, vol. 16, no. 6, 1 January 1992 (1992-01-01), pages 697-703, XP001179208 ISSN: 1144-0546;  HORWITZ C P ET AL: "OXIDATIVE ELECTROPOLYMERIZATION OF METAL SCHIFF-BASE COMPLEXES" MOLECULAR CRYSTALS AND LIQUID CRYSTALS, GORDON AND BREACH, LONDON, GB, vol. 160, 1 January 1988 (1988-01-01), pages 389-404, XP009024770 ISSN: 0026-8941;  MARTINS M ET AL: "NI(SALEN)-BASED POLYMER MODIFIED ELECTRODES AS SENSORS FOR METAL IONS" PROCEEDINGS OF THE SYMPOSIUM ON CHEMICAL AND BIOLOGICAL SENSORSAND ANALYTICAL ELECTROCHEMICAL METHODS, XX, XX, vol. 18, 1 January 2001 (2001-01-01), pages 399-407, XP009024792;  REDDINGER J L ET AL: "A NOVEL POLYMERIC METALLOMACROCYCLE SENSOR CAPABLE OF DUAL-ION COCOMPLEXATION" CHEMISTRY OF MATERIALS, AMERICAN CHEMICAL SOCIETY, WASHINGTON, US, vol. 10, 1 January 1998 (1998-01-01), pages 3-05, XP009024677 ISSN: 0897-4756;  REDDINGER J L ET AL: "TUNABLE REDOX AND OPTICAL PROPERTIES USING TRANSITION METAL- COMPLEXED POLYTHIOPHENES" MACROMOLECULES, ACS, WASHINGTON, DC, US, vol. 30, no. 3, 10 February 1997 (1997-02-10), pages 673-675, XP000678019 ISSN: 0024-9297;  See also references of WO 03065536A2;  See references of WO 03065536A2EP1500151-B1  HORWITZ C P ET AL: "OXIDATIVE ELECTROPOLYMERIZATION OF METAL SCHIFF-BASE COMPLEXES" MOLECULAR CRYSTALS AND LIQUID CRYSTALS, GORDON AND BREACH, LONDON, GB, vol. 160, 1 January 1988 (1988-01-01), pages 389-404, XP009024770 ISSN: 0026-8941;  MARTINS M ET AL: "NI(SALEN)-BASED POLYMER MODIFIED ELECTRODES AS SENSORS FOR METAL IONS" PROCEEDINGS OF THE SYMPOSIUM ON CHEMICAL AND BIOLOGICAL SENSORSAND ANALYTICAL ELECTROCHEMICAL METHODS, XX, XX, vol. 18, 1 January 2001 (2001-01-01), pages 399-407, XP009024792;  REDDINGER J L ET AL: "A NOVEL POLYMERIC METALLOMACROCYCLE SENSOR CAPABLE OF DUAL-ION COCOMPLEXATION" CHEMISTRY OF MATERIALS, AMERICAN CHEMICAL SOCIETY, WASHINGTON, US, vol. 10, 1 January 1998 (1998-01-01), pages 3-05, XP009024677 ISSN: 0897-4756;  REDDINGER J L ET AL: "TUNABLE REDOX AND OPTICAL PROPERTIES USING TRANSITION METAL- COMPLEXED POLYTHIOPHENES" MACROMOLECULES, ACS, WASHINGTON, DC, US, vol. 30, no. 3, 10 February 1997 (1997-02-10), pages 673-675, XP000678019 ISSN: 0024-9297;  AUDEBERT P ET AL: "REDOX AND CONDUCTING POLYMERS BASED ON SALEN-TYPE METAL UNITS; ELECTROCHEMICAL STUDY AND SOME CHARACTERISTICS" NEW JOURNAL OF CHEMISTRY, CNRS-GAUTHIER-VILLARS, MONTROUGE.; FR, vol. 16, no. 6, 1 January 1992 (1992-01-01), pages 697-703, XP001179208 ISSN: 1144-0546