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Picomolar Detection of Melamine Using Molecularly Imprinted Polymer‐Based Electrochemical Sensors Prepared by UV‐Graft Photopolymerization |
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| Authors: | Idriss Bakas Zakaria Salmi Mohamed Jouini Florence Geneste Isabelle Mazerie Didier Floner Benjamin Carbonnier Yusuf Yagci Mohamed M Chehimi |
| Institution: | 1. Université Paris Diderot, Sorbonne Paris Cité, ITODYS, UMR CNRS 7086, 15 rue J‐A de Ba?f, 75205 Paris Cedex 13, France;2. Université Paris‐Est, ICMPE UMR CNRS 7182, UPEC, 2–8 rue Henri Dunant, 94320 Thiais, France;3. UMR‐CNRS 6226, Institut des Sciences Chimiques de Rennes, Equipe MaCSE, Université de Rennes 1, Campus de Beaulieu, 35042 Rennes Cedex, France;4. Department of Chemistry, Istanbul Technical University, Maslak, Istanbul 34469, Turkey |
| Abstract: | Molecularly imprinted polymer (MIP) films of melamine were prepared by photopolymerization of vinylic monomers on diazonium‐modified gold electrodes. The gold‐grafted MIPs are specific and selective for melamine in either organic or aqueous media. The interferent molecules cyromazine and cyanuric acid were not recognized by the MIPs. The limit of detection was as low as 1.75×10?12 mol L?1 at S/N=3. Efficiency of melamine rebinding is related to the solubility parameter of the organic solvent or pH and ionic strength of the aqueous medium. It is concluded that diazonium salts permit to design robust electrochemical MIP sensors. |
| Keywords: | Diazonium salts Molecularly imprinted polymers Melamine Solvent effect Electrochemical sensors |