A facile method to sensitively monitor chlorinated phenols based on Ru(bpy)32+ electrochemiluminescent system using graphene quantum dots as coreactants
Carbon(2017)
摘要
Except the tunable photoluminescent property, graphene quantum dots (GQDs) with special structures have also exhibited other novel properties. Herein, GQDs played a novel coreactant role in Ru(bpy)32+/GQDs system to increase the anodic ECL signal of Ru(bpy)32+, which has been testified by ultraviolet, fluorescence, and electrochemiluminescence (ECL) experiments. Based on the coreactant mechanism of Ru(bpy)32+/GQDs system, a chlorinated phenol-related quenching ECL sensor was designed and the sensor showed a good linear relationship in the range from 0.60 to 55 μM with the detection limit of 1.4 × 10−8 M (S/N = 3). These results were not only beneficial to resolve the structure of GQDs, but also expanded the application field of GQDs.
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关键词
Graphene quantum dot,Ru(bpy)32+,Electrochemiluminescence,Detection,Phenol
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