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Authors: Wang DY, Wang J, Zhang JJ, Li YG, Zhang Y, Li YC, Ye BC
Article Title: Novel electrochemical sensing platform based on integration of molecularly imprinted polymer with Au@Ag hollow nanoshell for determination of resveratrol.
Publication date: 2019
Journal: Talanta
Volume: 196
Page numbers: 479-485.
DOI: 10.1016/j.talanta.2018.12.063
Alternative URL: https://www.sciencedirect.com/science/article/pii/S0039914018313286
Abstract: An electrochemical sensor is developed based on molecularly imprinted polymer (MIP) and Au@Ag hollow nanoshell modified indium tin oxide (ITO) electrodes (MIP/Au@Ag/ITO) for resveratrol (Res) determination. Au@Ag bimetallic hollow nanoshells were prepared by electrodeposition, and followed with a simple replacement reaction. A layer of MIP was then synthesized in situ on the Au@Ag surface by electro-polymerization, with Res acting as template molecule and o-phenylenediamine as functional monomer. Hexacyanoferrate was used as electrochemical probe to generate signals, and the electrochemical behaviors of Res-MIP/Au@Ag/ITO were explored by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). A linear range from 2.0 × 10-11 to 9.0 × 10-9 M for measuring Res was obtained, with a low detection limit of 7.1 × 10-12 M (S/N = 3). With good stability and selectivity, this newly developed sensor has been successfully applied to Res measurement in grape seed extract
Template and target information: resveratrol, Res
Author keywords: Electrochemical sensor, Au@Ag bimetallic hollow nanoshells, molecularly imprinted polymer, resveratrol, Trace measurement
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