Piperidine–calix [4] arene modified gold nanoparticles: Imidacloprid colorimetric sensing
| Autor: | Shi-Liang Tan, Haibing Li, Fan Wang, Haiyang Zhao, Demei Tian, Jun’An Liu |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Detection limit
Materials science Metals and Alloys Analytical chemistry Infrared spectroscopy Condensed Matter Physics Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry.chemical_compound chemistry Colloidal gold Imidacloprid Materials Chemistry Click chemistry Piperidine Electrical and Electronic Engineering Spectroscopy Instrumentation Mannich reaction Nuclear chemistry |
| Zdroj: | Sensors and Actuators B: Chemical. 204:522-527 |
| ISSN: | 0925-4005 |
| DOI: | 10.1016/j.snb.2014.08.012 |
| Popis: | A novel piperidine-calix [4] arene was synthesized by the Mannich reaction. Then, piperidine-calix [4] arene modified gold nanoparticles (PPC-Au NPs) were designed and synthesized through click reaction. The resulting gold nanoparticles were characterized by UV–vis spectroscopy, IR spectroscopy, transmission electron microscopy (TEM). The newly synthesized gold nanoparticles had a cooperative effect on recognition of imidacloprid resulting in appreciable changes in color. The advantage of our experiments over classical assays is it can realize the prompt on-site and real-time detection of imidacloprid with high sensitivity (5.0 × 10−6 M) and selectively. The developed method was also successfully applied for detecting imidacloprid in tape water with a detection limit of 2.5 × 10−5 M. |
| Databáze: | OpenAIRE |
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