A colorimetric iron sensor based on the partition of phenanthroline complexes into polymeric hydrogels. Combinatorial synthesis and high throughput screening of the hydrogel matrix

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• 作者：Marí ; a Victoria Martí ; nezAuthor Vitae ; Claudia R. RivarolaAuthor Vitae ; Marí ; a Cristina MirasAuthor Vitae ; Cesar A. Barbero ; ^{cbarbero@exa.unrc.edu.ar}Author Vitae
• 关键词：Combinatorial chemistry ; Iron ; Hydrogel ; Ligands ; Colorimetric ; Sensor ; Water quality
• 刊名：Sensors and Actuators B: Chemical
• 出版年：2017
• 出版时间：31 March 2017
• 年：2017
• 卷：241
• 期：Complete
• 页码：19-32
• 全文大小：2645 K
• 卷排序：241

文摘

A combinatorial library of 21 polymeric hydrogels is synthesized. A colorimetric high throughput screening allows to find out the materials which absorb the target complex: tris(phenanthroline)iron(II). A colorimetric sensor for iron(II) is built by loading bathophenathroline inside a poly(acrylamide-co-(-acrylamido-2-methylpropanesulfonic acid)) hydrogel. The sensor shows a detection limit of 0.1 ppm (colorimetric) and 0.01 ppm (spectrophotometric) for iron (II). The sensor is applied in the direct detection of iron content in milk, where direct colorimetric detection in solution is precluded due to the opacity of the sample.