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
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- 作者：Shuhuai Li ; Chunhua Liu ; Guihao Yin ; Jinhui Luo ; Zhenshan Zhang…
- 关键词：Supramolecular imprint ; Nanocomposite ; Catalytic amplification ; 2 ; aminophenol ; Electropolymerization ; Scanning electron microscopy ; XPS ; Cyclic voltammetry ; Vegetables
- 刊名：Microchimica Acta
- 出版年：2016
- 出版时间：December 2016
- 年：2016
- 卷：183
- 期：12
- 页码：3101-3109
- 全文大小：
- 刊物类别：Chemistry and Materials Science
- 刊物主题：Nanochemistry; Nanotechnology; Characterization and Evaluation of Materials; Analytical Chemistry; Microengineering;
- 出版者：Springer Vienna
- ISSN：1436-5073
- 卷排序：183
文摘
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.