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- 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.
- Authors
Li, Shuhuai; Liu, Chunhua; Yin, Guihao; Luo, Jinhui; Zhang, Zhenshan; Xie, Yixian
- 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.
- Subjects
ELECTROCHEMICAL sensors; NEONICOTINOIDS; IMIDACLOPRID; NANOPARTICLES; BROMOPHENOLS; DOPING agents (Chemistry)
- Publication
Microchimica Acta, 2016, Vol 183, Issue 12, p3101
- ISSN
0026-3672
- Publication type
Article
- DOI
10.1007/s00604-016-1962-9