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Multi-tasking Schiff base ligand: a new concept of AuNPs synthesis
Jose Maria Abad1, Iria Bravo1,2, Felix Pariente1,2
1Department of Analytical Chemistry, Universidad Autónoma de Madrid, Calle Francisco Tomás y Valiente 7, 28049, Madrid, Spain.
Abstract:
Multi-tasking 3,4-dihydroxysalophen Schiff base tetradentate ligand (3,4-DHS) as reductant, stabilizer, and catalyst in a new concept of gold nanoparticles (AuNPs) synthesis is demonstrated. 3,4-DHS is able to reduce HAuCl4 in water, acting also as capping agent for the generation of stable colloidal suspensions of Schiff base ligand-AuNPs assemblies of controlled size by providing a robust coating to AuNPs, within a unique reaction step. Once deposited on carbon electrodes, 3,4-DHS-AuNPs assemblies show a potent electrocatalytic effect towards hydrazine oxidation and hydrogen peroxide oxidation/reduction.
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