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

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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Abstract

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.