Electrochemiluminescence Biosensors Based on Enzyme Crosslinked Ru(bpy)32+ -doped SiO2 Nanoparticles

Abstract

电致化学发光(ECL)具有连续可测、高灵敏度、稳定、方法简单等特点,因此被广泛应用于分子生物学、药学、化学和环保等领域。联吡啶钌由于具有水溶性好,化学性能稳定,氧化还原可逆,发光效率高和激发态寿命长等特点而成为ECL研究最多应用最广的ECL发光物质。将联吡啶钌包埋于二氧化硅纳米颗粒的内部能够使其发光免受外界环境的影响,且增加了光稳定性和增强了发光信号,同时,由于表面的二氧化硅层容易修饰一些官能团,如氨基、巯基、羰基等,扩大了联吡啶钌ECL在生物分析领域的应用。本论文工作将酶交联于RuDS的表面,以酶交联的RuDS纳米颗粒修饰电极做工作电极,通过酶催化反应生成的氧化还原物质NADH对联吡啶钌EC...Electrochemiluminescence (ECL) has been widely applied in biological, pharmic, chemical and environmental analysis due to its continuance, sensitivity, reproducibility and relative easiness to be automatically controlled. Ru(bpy)32+ has became the most widely used luminescent reagent because of its good water solubility, chemical stability, reversible redox, high efficiency and long excited state ...学位:理学硕士院系专业:化学化工学院化学系_分析化学学号:2052007115095

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