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Selective Sensing of Copper ions by Mesoporous Porphyrinic Metal-Organic Framework Nanoovals

文献类型： 外文期刊

作者： Xu, Zhiyuan 1 ; Meng, QingYi 1 ; Cao, Qiang 2 ; Xiao, Yushi 2 ; Liu, Huan 2 ; Han, Gang 2 ; Wei, Shuhua 1 ; Yan, Jiang 1 ; W 1 ;

作者机构： 1.North China Univ Technol, Sch Informat Sci & Technol, 5 Jinyuanzhuang St, Beijing 100144, Peoples R China

2.Chinese Acad Fishery Sci, Key Lab Control Qual & Safety Aquat Prod, Minist Agr, Beijing 100141, Peoples R China

3.Shanghai Ocean Univ, Shanghai 201306, Peoples R China

期刊名称：ANALYTICAL CHEMISTRY （ 影响因子：6.986； 五年影响因子：6.755 ）

ISSN： 0003-2700

年卷期： 2020 年 92 卷 2 期

页码：

收录情况： SCI

摘要： Copper is a common element in the environment and human body. Exposure to high concentrations of Cu2+ potentially causes health issues, such as Wilson and Alzheimer's diseases. It is of great importance for the highly selective and sensitive detection of Cu2+. In this work, a porous metal organic framework (MOF), PCN222, is employed for the selective and sensitive determination of CU2+. The selectivity of PCN222 relies on the interaction between Cu2+ and the porphyrin core of PCN222. PCN222 stacked with porphyrin rings exhibits solvent adaptability, which overcomes the drawback of the natural porphyrinic enzyme (such as HRP). PCN222 is used for constructing a sensor which shows a linear range of Cu2+ concentration from 0.4 to 13 mu mol L-1, and its limit of detection (LOD) is 50 nmol L-1. The response time is less than 3 s, which is faster than previous methods. This work opens up a new route to MOF applications in the detection of metal ions in complex environments.

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