基于金纳米粒子-聚邻苯二胺的分子印迹电化学传感器检测己烯雌酚

IF 4 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Synthetic Metals Pub Date : 2024-12-04 DOI:10.1016/j.synthmet.2024.117814

Jieming Dong , Junyao Li , Laidi Xu , Hongyu Zhang , Yong Kong , Guojun Zheng

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引用次数: 0

摘要

采用一步法制备了金纳米粒子(AuNPs)-聚邻苯二胺（PoPD）纳米复合材料，并将其用作修饰玻碳电极（GCE）的内置氧化还原探针。以电聚合邻苯二胺（oPD）为印迹层，将己烯雌酚（DES）作为模板分子固定在AuNPs-PoPD/GCE表面，然后用乙醇和水的混合物（v/v, 50 %）从印迹层中洗脱。所制备的分子印迹PoPD/AuNPs-PoPD/GCE （MI-PoPD/AuNPs-PoPD/GCE）可在0.1 ~ 10 μM范围内对DES进行电化学检测，检出限（LOD）为0.062 μM （S/N = 3）。本文还对DES检测参数进行了优化。该分子印迹DES传感器具有较高的稳定性、选择性和重复性，可成功用于牛奶样品中DES的检测。

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A molecularly imprinted electrochemical sensor based on Au nanoparticles-poly(o-phenylenediamine) for diethylstilbestrol detection

Au nanoparticles (AuNPs)-poly(o-phenylenediamine) (PoPD) nanocomposite was facilely prepared by a one-step method and used as the built-in redox probe for the decoration of a glassy carbon electrode (GCE). As the template molecules, diethylstilbestrol (DES) was immobilized on the AuNPs-PoPD/GCE surface by using electropolymerized o-phenylenediamine (oPD) as the imprinting layer, which was then eluted from the imprinting layer with the mixture of ethanol and water (v/v, 50 %). The resultant molecularly imprinted PoPD/AuNPs-PoPD/GCE (MI-PoPD/AuNPs-PoPD/GCE) was used for the electrochemical detection of DES in a wide range from 0.1 to 10 μM, and the limit of detection (LOD) was 0.062 μM (S/N = 3). The parameters for DES detection were also optimized in this work. The molecularly imprinted DES sensor showed high stability, selectivity and reproducibility, and it was successfully used for the detection of DES in the milk samples.

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来源期刊

Synthetic Metals 工程技术-材料科学：综合

CiteScore

8.30

自引率

4.50%

发文量

189

审稿时长

33 days

期刊介绍： This journal is an international medium for the rapid publication of original research papers, short communications and subject reviews dealing with research on and applications of electronic polymers and electronic molecular materials including novel carbon architectures. These functional materials have the properties of metals, semiconductors or magnets and are distinguishable from elemental and alloy/binary metals, semiconductors and magnets.