用于铁的荧光裸眼传感的罗丹明锚定聚丙烯酰胺水凝胶
Rhodamine-Anchored Polyacrylamide Hydrogel for Fluorescent Naked-Eye Sensing of Fe.
作者信息
Jiang Dandan, Zheng Minghao, Ma Xiaofan, Zhang Yingzhen, Jiang Shaohua, Li Juanhua, Zhang Chunmei, Liu Kunming, Li Liqing
机构信息
Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry, Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, China.
Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China.
出版信息
Molecules. 2023 Sep 11;28(18):6572. doi: 10.3390/molecules28186572.
A fluorescent and colorimetric poly (acrylamide)-based copolymer probe has been designed via free radical polymerization of a commercial acrylamide monomer with a rhodamine-functionalized monomer . Metal ion selectivity of was investigated by fluorescence and colorimetric spectrophotometry. Upon addition of Fe, a visual color change from colorless to red and a large fluorescence enhancement were observed for the ring-opening of the rhodamine spirolactam mechanism. The monomer gives a sensitive method for quantitatively detecting Fe in the linear range of 100-200 μM, with a limit of detection as low as 27 nM and exhibiting high selectivity for Fe over 12 other metal ions. The hydrogel sensor was characterized by FTIR, and the effects of amount on gel content and swelling properties were explored. According to the recipe of 1.0 mol% to the total monomers, the fabricated hydrogel sensor displayed a good swelling property and reversibility performance and has potential for application in the imaging of Fe level in industrial wastewater.
通过将市售丙烯酰胺单体与罗丹明功能化单体进行自由基聚合，设计了一种基于荧光和比色的聚（丙烯酰胺）共聚物探针。通过荧光和比色分光光度法研究了其对金属离子的选择性。加入铁后，由于罗丹明螺内酰胺机制的开环，观察到视觉颜色从无色变为红色以及荧光大幅增强。该单体提供了一种灵敏的方法，可在100 - 200 μM的线性范围内定量检测铁，检测限低至27 nM，并且对铁的选择性高于其他12种金属离子。通过傅里叶变换红外光谱对水凝胶传感器进行了表征，并探讨了其用量对凝胶含量和溶胀性能的影响。按照占总单体1.0 mol%的配方，制备的水凝胶传感器表现出良好的溶胀性能和可逆性能，在工业废水中铁含量成像方面具有应用潜力。
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