金属有机骨架
荧光
螯合作用
分析物
化学
水溶液中的金属离子
多路复用
配体(生物化学)
纳米技术
金属
材料科学
无机化学
色谱法
生物信息学
吸附
有机化学
生物
生物化学
物理
受体
量子力学
作者
Gregory S. Shen,Linling Zhong,Guizhu Liu,Yang Liu,Xin Wen,Guanxi Chen,Jiangqi Zhao,Changjun Hou,Xianfeng Wang
标识
DOI:10.1016/j.jcis.2023.09.010
摘要
Accurate detection and differentiation of multiple anions is still a difficult problem due to their wide variety, structural similarity, and mutual interference. Hence, four rare-earth metal-organic frameworks (RE-MOFs) including Dy-MOFs, Er-MOFs, Tb-MOFs and Y-MOFs are successfully prepared by using TCPP as the ligand and rare-earth ions as the metal center via coordination chelation. It is found that 7 anions can light up their fluorescence. Thus, a high-resolution sensing array based on RE-MOFs nanoprobes is employed to differentiate these anions from intricate analytes in real-time scenarios. The distinctive host-guest response promotes the RE-MOFs nanoprobes to selectively extract the target anions from the complex samples. By taking advantage of the cross-response between RE-MOFs nanoprobes and anions, it allows to create an array for detecting target analytes using pattern recognition. Additionally, RE-MOFs nanoprobes also facilitate the quantitative analysis of these anions (PO43−, H2PO4−, HPO42−, F−, S2−, CO32– and C2O42−). More importantly, the exceptional effectiveness of this method has been demonstrated through various successful applications, including quality monitoring of 8 toothpaste brands, intracellular phosphate imaging, and blood phosphorus detection in mice with vascular calcification. These findings provide robust evidence for the efficacy and reliability of the RE-MOFs nanoprobes array for anion recognition.
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