Calix[4]arene-modified silica nanoparticles for the potentiometric detection of iron (III) in aqueous solution |
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| Authors: | M. Becuwe P. Rouge C. Gervais D. Cailleu M. Courty A. Dassonville-Klimpt P. Sonnet E. Baudrin |
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| Affiliation: | 1. UMR CNRS 6007, laboratoire de réactivité et chimie des solides, université de Picardie Jules-Verne, 33, rue Saint-Leu, 80039 Amiens, France;2. UMR CNRS 6219, laboratoire des glucides, faculté de pharmacie, université de Picardie Jules-Verne, 1, rue des Louvels, 80037 Amiens, France;3. UMR CNRS 7574, laboratoire de chimie de la matière condensée de Paris, collège de France, UPMC université Paris 06, 11, place Marcelin-Berthelot, 75231 Paris cedex 05, France;4. Plateforme analytique, université de Picardie Jules-Verne, 80039 Amiens, France;5. FR3085 CNRS, université de Picardie Jules-Verne, institut de chimie de Picardie, 33, rue Saint-Leu, 80039 Amiens cedex, France |
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| Abstract: | This article aims to present the synthesis and the characterization of a novel hybrid material, based on silica nanoparticles, and which can be used as a sensitive element for the electrochemical detection of iron (III). This material was obtained by grafting an iron ligand-based calix[4]arene structure onto nanosized silica particles. The covalent anchoring of the chelator was obtained by nucleophilic coupling reaction between the modified calix[4]arene and the chloropropyl functionalized silica. The grafting reaction was confirmed by FTIR (DRIFT), solid-state 13C Cross-Polarization MAS (CPMAS) NMR and thermal analysis. The interaction between the material and the dissolved iron (III) was demonstrated though potentiometric measurements. A linear evolution of the open circuit potential, which can be used analytically for iron (III) detection, has been obtained. |
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