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A novel dinuclear copper complex with tetraglycol aldehyde-phenylalanine Schiff base has been synthesized. It was characterized and formulated as [Cu 2 L(NO 3 )]NO 3 by elemental analysis, magnetic susceptibility, TG-DTA, IR, EPR and 1 H NMR spectra. The obtained complex can be used as a good catalyst for the polymerization of methyl methacrylate (MMA). The optimum polymerization conditions are: MMA/catalyst = 500 (molar ratio); [catalyst] = 7.5×10 −3 mol·L −1 ; dioxane as solvent; 80 ; 6 ℃ h. Polymethyl methacrylate (PMMA) with 80% conversion, 7.2×10 5 viscosity-average molecular weight and 60.5% syndiotacticity was obtained. This complex has also been shown to play an important role in scavenging 2 O i .