Preparation And Study Of Self-Assmbly Four Sulforated Rare Earth Phthalocy Anine Films On Performance

To begin with tetrasulfonated phthalocyaninagadolinium and tetrasulfonated phthalocyanine lanthanum were synthesized. The UV-Vis analysis results indicate that the DAR/GdTs(Pc)2, PEI/GdTs(Pc)2, PEI/LaTs(Pc)2 and DAR/LaTs(Pc)2 self-assembled multilayer films were successfully fabricated and the progressive assembly runs regularly with almost equal amounts of deposition in each cycle.The AFM images of the six-bilayer film exhibits domain structures.Glassy carbon electrode smodified with nanosized multilayer films containing gadolinium tetrasulfonated phthalocyanine (GdTs(Pc)2 tetrasulfonated phthalocyanina lanthanum(LaTs(Pc)2) and diazo-resins were fabricated by an electrostatic self-assembly technique respectively. The electrocatalytic oxidation of sodium nitrite and ascorbic acid (AA) on the modified electrode was investigated by means of cyclic voltammetry.It was found that the modified electrode exhibits good selectivity for catalytic oxidation of sodium nitrite and AA. Chronoamperometric response of the modified electrode with six bilayers of GdTs(Pc)2 and LaTs(Pc)2 were in buffer solution respectively.The diffusion coefficient of AA and sodium nitrite were 2.7×10-5cm2/s,l.l×10-5cm2/s respectively.