A selective sensing platform for the simultaneous detection of ascorbic acid, dopamine, and uric acid based on AuNPs/carboxylated COFs/Poly(fuchsin basic) film,Analytical Methods

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A selective sensing platform for the simultaneous detection of ascorbic acid, dopamine, and uric acid based on AuNPs/carboxylated COFs/Poly(fuchsin basic) film
Analytical Methods ( IF 2.7 ) Pub Date : 2021-08-30 , DOI: 10.1039/d1ay00849h
Yasan He _{1,

2} , Xiaogeng Lin ₁ , Yuan Tang ₁ , Ling Ye ₁

Affiliation

In this study, an electrochemical sensing strategy was developed based on the synergies of gold nanoparticles (AuNPs) doped carboxylated covalent organic frameworks (ACOFs) and poly(fuchsin basic) film for the simultaneous detection of ascorbic acid (AA), dopamine (DA), and uric acid (UA). This strategy not only took advantage of the adopted materials but also made use of the H-bonding and electrostatic interaction between the three compounds and materials. For this sensing, a poly-BFu film was formed on the surface of bare glass carbon electrode (GCE) under a constant potential. AuNPs was highly dispersed and immobilized on the constructed ACOF-TaTp to obtain AuNPs@ACOF. The constructed sensor AuNPs@ACOF/p-BFu/GCE combined the merits of high surface area, hydrophilicity, conductivity, and selective affinity, consequently exhibiting high sensitivity and selectivity toward the simultaneous detection of AA, DA, and UA with wide linear response ranges of 25–1500 μM, 0.75–40 μM, and 1–200 μM, respectively. The corresponding detection limits were 12.0 μM, 0.15 μM, and 0.22 μM. The simultaneous determination of UA in real human urine sample further confirmed the practicability of the designed electrode.

中文翻译：

基于AuNPs/羧化COFs/聚（品红碱性）薄膜同时检测抗坏血酸、多巴胺和尿酸的选择性传感平台

在这项研究中，基于金纳米粒子 (AuNPs) 掺杂的羧化共价有机骨架 (ACOF) 和聚（品红碱性）膜的协同作用开发了一种电化学传感策略，用于同时检测抗坏血酸 (AA)、多巴胺 (DA) , 和尿酸 (UA)。该策略不仅利用了所采用的材料，还利用了三种化合物和材料之间的氢键和静电相互作用。对于这种传感，在恒定电位下，在裸玻璃碳电极 (GCE) 的表面上形成聚 BFu 膜。AuNPs高度分散并固定在构建的ACOF-TaTp上以获得AuNPs@ACOF。构建的传感器 AuNPs@ACOF/p-BFu/GCE 结合了高表面积、亲水性、导电性和选择性亲和力的优点，因此对同时检测 AA、DA 和 UA 表现出高灵敏度和选择性，线性响应范围分别为 25-1500 μM、0.75-40 μM 和 1-200 μM。相应的检测限为 12.0 μM、0.15 μM 和 0.22 μM。同时测定真人尿样中UA进一步证实了所设计电极的实用性。

更新日期：2021-09-13

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