Abad Jose Maria, Bravo Iria, Pariente Felix, Lorenzo Encarnación
Department of Analytical Chemistry, Universidad Autónoma de Madrid, Calle Francisco Tomás y Valiente 7, 28049, Madrid, Spain.
IMDEA Nanociencia, Calle Faraday 9, 28049, Madrid, Spain.
Anal Bioanal Chem. 2016 Mar;408(9):2329-38. doi: 10.1007/s00216-016-9329-y. Epub 2016 Feb 27.
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.
本文展示了多任务3,4 - 二羟基水杨醛缩邻苯二胺席夫碱四齿配体（3,4 - DHS）在金纳米颗粒（AuNPs）合成新概念中作为还原剂、稳定剂和催化剂的作用。3,4 - DHS能够在水中还原HAuCl4，在独特的反应步骤中，通过为AuNPs提供坚固的涂层，作为封端剂生成尺寸可控的席夫碱配体 - AuNPs组装体的稳定胶体悬浮液。一旦沉积在碳电极上，3,4 - DHS - AuNPs组装体对肼氧化和过氧化氢氧化/还原表现出强大的电催化作用。
