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A Novel Surface‐tethered Analysis Method for Mercury (II) ion Detection via Self‐assembly of Individual Electrochemiluminescence Signal Units
Electroanalysis ( IF 2.7 ) Pub Date : 2018-02-07 , DOI: 10.1002/elan.201700660 Yuan Liu 1 , Yunxia Hu 1 , Sui Wang 1 , Zhiyong Guo 1 , Yufang Hu 1
Electroanalysis ( IF 2.7 ) Pub Date : 2018-02-07 , DOI: 10.1002/elan.201700660 Yuan Liu 1 , Yunxia Hu 1 , Sui Wang 1 , Zhiyong Guo 1 , Yufang Hu 1
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A novel analysis strategy based on the analyte‐induced surface‐tethered (AIST) of electrochemiluminescence (ECL) signal nanoparticles was first proposed for detection of Mercury (II) ion (Hg2+). In this work, luminol@Au‐cysteamine‐thymine (luminol@Au‐Cys‐T) multifunctional nanoarchitecture was designed as ECL signal units in the experimental process. Through a specific T‐Hg2+‐T coordination, luminol@Au‐Cys‐T composites were gravitationally self‐assembled to the electrode surface, which was coated with tris (2‐aminoethyl) amine functionalized graphene oxide@perylene‐3,4,9,10‐tetracarboxylic acid‐thymine (GO@PTCA‐TAEA‐T) complex film. This simple strategy of AIST of signal molecules could amplify the response signal and vastly enhance the sensitivity. Under the optimum condition, the linear relationship of Hg2+ concentration variation from 0.005 nM to 5 nM with a limit of detection (LOD) down to 0.002 nM (S/N=3), which also offered an alternative analytical approach with excellent performance of stability and selectivity. The regression equation was y=−414.52+2305.02 lgC(Hg2+) (pM). This Hg2+ ECL sensor had a good application prospects for the analysis of real samples.
中文翻译：
通过单个电化学发光信号单元自组装检测汞（II）离子的新型表面束缚分析方法
首先提出了一种基于分析物诱导的电化学发光（ECL）信号纳米粒子的表面束缚（AIST）的新颖分析策略，用于检测汞（II）离子（Hg 2+）。在这项工作中，在实验过程中将luminol @ Au-半胱胺-胸腺嘧啶（luminol @ Au-Cys-T）多功能纳米体系结构设计为ECL信号单元。通过特定的T-Hg 2+-T配位，将luminol @ Au-Cys-T复合材料在重力作用下自组装到电极表面，并在表面涂有三（2-氨基乙基）胺官能化氧化石墨烯@ perylene-3,4,9,10-四羧酸胸腺嘧啶（GO @ PTCA-TAEA-T）复合膜。这种信号分子AIST的简单策略可以放大响应信号并大大提高灵敏度。在最佳条件下，Hg 2+浓度从0.005 nM到5 nM的线性关系，检出限（LOD）低至0.002 nM（S / N = 3），这也提供了性能优异的另一种分析方法稳定性和选择性。回归方程为y = -414.52 + 2305.02 lgC （Hg 2 + ）（pM）。汞2+ ECL传感器在实际样品分析中具有良好的应用前景。
更新日期：2018-02-07
中文翻译：
通过单个电化学发光信号单元自组装检测汞（II）离子的新型表面束缚分析方法
首先提出了一种基于分析物诱导的电化学发光（ECL）信号纳米粒子的表面束缚（AIST）的新颖分析策略，用于检测汞（II）离子（Hg 2+）。在这项工作中，在实验过程中将luminol @ Au-半胱胺-胸腺嘧啶（luminol @ Au-Cys-T）多功能纳米体系结构设计为ECL信号单元。通过特定的T-Hg 2+-T配位，将luminol @ Au-Cys-T复合材料在重力作用下自组装到电极表面，并在表面涂有三（2-氨基乙基）胺官能化氧化石墨烯@ perylene-3,4,9,10-四羧酸胸腺嘧啶（GO @ PTCA-TAEA-T）复合膜。这种信号分子AIST的简单策略可以放大响应信号并大大提高灵敏度。在最佳条件下，Hg 2+浓度从0.005 nM到5 nM的线性关系，检出限（LOD）低至0.002 nM（S / N = 3），这也提供了性能优异的另一种分析方法稳定性和选择性。回归方程为y = -414.52 + 2305.02 lgC （Hg 2 + ）（pM）。汞2+ ECL传感器在实际样品分析中具有良好的应用前景。
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