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Reference type: Journal
Authors: Li SH, Liu CH, Yin GH, Luo JH, Zhang ZS, Xie YX
Article Title: Supramolecular imprinted electrochemical sensor for the neonicotinoid insecticide imidacloprid based on double amplification by Pt-In catalytic nanoparticles and a Bromophenol blue doped molecularly imprinted film.
Publication date: 2016
Journal: Microchimica Acta
Volume: 183
Issue: (12)
Page numbers: 3101-3109.
DOI: 10.1007/s00604-016-1962-9

Abstract: The authors describe an electrochemical sensor for the neonicotinoid insecticide imidacloprid (IMI) based on Pt-In catalytic nanocomposite film and Bromophenol blue amplification. The Pt-In nanocomposite film was deposited on the surface of a modified glassy carbon electrode. The composite molecularly imprinted polymer (MIP) was prepared by electro-polymerization using bromophenol blue doped o-aminophenol as functional monomer and 4-tert-butylcalix[6]arene-IMI supramolecular inclusion complex as template molecule. The experimental results showed that the current intensity of IMI was clearly amplified in the potential range from -0.3 to -1.8 V, because of the double amplification, based on the Pt-In film and Bromophenol blue catalysis. Moreover, the double recognition ability of the sensor, which relied on the MIP and the vacuum structure of 4-tert-butylcalix[6]arene, effectively increased the specific recognition performance. The feasibility of its practical applications has been demonstrated by the analysis of vegetable samples
Template and target information: imidacloprid, IMI
Author keywords: Supramolecular imprint, Nanocomposite, Catalytic amplification, 2-aminophenol, electropolymerization, scanning electron microscopy, XPS, cyclic voltammetry, vegetables

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