Calix[4]arene-modified silica nanoparticles for the potentiometric detection of iron (III) in aqueous solution

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• 作者：M. Becuwe^a ; ^e ; P. Rouge^b ; ^e ; C. Gervais^c ; D. Cailleu^d ; ^e ; M. Courty^a ; ^e ; A. Dassonville-Klimpt^b ; ^e ; P. Sonnet^b ; ^e ; E. Baudrin^a ; ^b ; ^e ; ^{emmanuel.baudrin@u-picardie.fr}
• 关键词：ICL670 ; Iron sensor ; Potentiometry ; Calix[4]arene
• 刊名：Comptes Rendus Chimie
• 出版年：2012
• 期刊代码：119_16310748
• 类别：ch
• 出版时间：April, 2012
• 卷：15
• 期：4
• 页码：290-297
• 文件大小：1007 K

摘要

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.