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首页> 外文期刊>Journal of Materials Chemistry, A. Materials for energy and sustainability >An amino-decorated dual-functional metal-organic framework for highly selective sensing of Cr(III) and Cr(VI) ions and detection of nitroaromatic explosives
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An amino-decorated dual-functional metal-organic framework for highly selective sensing of Cr(III) and Cr(VI) ions and detection of nitroaromatic explosives

机译：氨基修饰的双功能金属有机框架，用于高度选择性地检测Cr（III）和Cr（VI）离子并检测硝基芳族炸药

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摘要

A 3D Zn(II)-based metal-organic framework, [Zn-2(TPOM)(NH2-BDC)(2)]center dot 4H(2)O (NH2-Zn-MOF, TPOM = tetrakis(4-pyridyloxymethylene)methane and NH2-BDC = 2-aminoterephthalic acid), was successfully achieved via a hydrothermal reaction. The framework adopts a (4,2)-connected 3D network, with the Schlafli symbol {6(2)center dot 8(4)}. This complex exhibits strong luminescence emission, which is selectively sensitive to Cr(III) and Cr(VI) ions. More importantly, the fluorescence explorations indicated that it represents the first example of MOF-based fluorescent probes for detecting Cr(III) through a fluorescence enhancement mechanism. In addition, it also shows highly selective and sensitive detection of electron-deficient nitroaromatic compounds through fluorescence quenching. These properties make the NH2-Zn-MOF a potential luminescence sensor for selectively detecting these chemicals.
机译：一个基于3D Zn（II）的金属有机框架，[Zn-2（TPOM）（NH2-BDC）（2）]中心点4H（2）O（NH2-Zn-MOF，TPOM =四（4-吡啶基甲醛）甲烷和NH2-BDC = 2-氨基对苯二甲酸）是通过水热反应成功实现的。该框架采用（4,2）连接的3D网络，其Schlafli符号为{6（2）center dot 8（4）}。该络合物显示出强的发光发射，该发光发射对Cr（III）和Cr（VI）离子选择性敏感。更重要的是，荧光探测表明它代表了通过荧光增强机制检测Cr（III）的基于MOF的荧光探针的第一个实例。此外，它还显示了通过荧光猝灭对缺电子的硝基芳族化合物进行高度选择性和灵敏的检测。这些特性使NH2-Zn-MOF成为用于选择性检测这些化学物质的潜在发光传感器。

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