A novel electrochemiluminescence sensor based on Ru(bpy)32+/N - doped carbon nanodots system for the detection of bisphenol A
A novel electrochemiluminescence sensor based on Ru(bpy)32+/N - doped carbon nanodots system for the detection of bisphenol A
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DOI：
10.1016/j.aca.2015.08.055
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发表时间：
2015-10-01
影响因子：
6.2
通讯作者：
You, Tianyan
中科院分区：
文献类型：
--
作者：
Li, Libo;Bin Yu;You, Tianyan
以N掺杂碳纳米点（N-C dots）为共反应物，建立了一种新型Ru（bpy）3（2+）电化学发光（ECL）传感平台，用于双酚A（BPA）的灵敏和选择性检测。N-C dots不仅能增强Ru（bpy）（3）（2+）电化学发光信号，而且能显著提高体系的重现性和稳定性。基于Ru（bpy）（3）（2+）= N-C量子点对BPA的猝灭效应，建立了一种灵敏的BPA电化学发光传感体系。研究了NeC点增强和BPA猝灭的电化学发光机理。在最佳条件下，BPA的浓度在0.03-1.0 μ M范围内与被抑制的ECL强度呈良好的线性关系，检出限为10 nM。一个传感器连续25次测量的相对标准偏差（RSD）为1.1%，8个不同的传感器分别为2.5%。将该传感平台成功应用于婴儿奶瓶和奶嘴中BPA的检测，获得了较满意的回收率。(C)2015 Elsevier B. V.版权所有。
A novel Ru(bpy)(3)(2+)-based electrochemiluminescence (ECL) sensing platform, using N-doped carbon nanodots (N-C dots) as co-reactant, was established for the sensitive and selective detection of bisphenol A (BPA). N-C dots not only could enhance the ECL signal, but also significantly improved the reproducibility and stability of Ru(bpy)(3)(2+) ECL system. The developed ECL sensing system was sensitive to detect BPA based on its efficient quenching effect on Ru(bpy)(3)(2+) = N-C dots. The NeC dots-enhanced ECL mechanism and BPA-quenched ECL mechanism were investigated. Under the optimum conditions, the inhibited ECL intensity was in good linear relationship versus the concentration of BPA in the range of 0.03-1.0 mu M with the detection limit of 10 nM. The relative standard deviation (RSD) for 25 successive measurements with one sensor was 1.1% and for eight different sensors was 2.5%, respectively. The fabricated sensing platform was successfully applied for the detection of BPA in baby bottle and nipple, and relatively satisfactory recoveries were obtained. (C) 2015 Elsevier B.V. All rights reserved.