The purpose of this study is to develop luminescence sensors for the detection of nitroaromatic compounds (NACs) and metal ions to protect human health and prevent environmental pollution.
The composition and morphology of Eu-metal-organic frameworks (MOF) (1) were well characterized by powder X-ray diffraction, elemental analyses, Fourier-transform infrared spectroscopy, thermogravimetric analysis, X-ray photoelectron spectroscopy and scanning electron microscopy. The emission spectrum displays that 1 has significant characteristic emission bands of Eu(III) ions. The authors further investigated the fluorescence sensing performances of 1 to NACs and metal ions.
The results show that Eu-MOF (1) exhibits significant fluorescence quenching effect toward p-nitroaniline and Fe3+ ions with good stability and recyclability. This means that 1 can be used as a multifunctional sensing material for the detection of p-nitroaniline and Fe3+ ions.
The authors have successfully synthesized a fluorescence Eu-based sensing material under hydrothermal conditions. In addition, the fluorescence property and sensing performances for detecting NACs and metal ions were studied. The results suggest that 1 has highly selective fluorescence quenching toward p-nitroaniline and Fe3+ ions with not only high sensitivity and selectivity but also excellent stability and recyclability. Furthermore, this study has confirmed that the multifunctional MOF material is very useful in environment pollutants’ detection and monitoring.
This project is supported by NSFC (Grant no. 21271138) and the NSF of Tianjin (No. 14JCYBJC17500), the State Key Laboratory of Inorganic Synthesis and Preparative Chemistry of Jilin University (No. 2015-02), The Science and Technology Plans of Tianjin (No. 15PTSYJC00230) and The 2016 National College Students’ innovation and entrepreneurship training program (201610058013). The author(s) of this article have not made their research data set openly available. Any enquiries regarding the data set can be directed to the corresponding author.
Pu, Y., Yu, Z., Wang, F., Fu, Y., Yan, T. and Cheng, H. (2019), "Selective fluorescence sensing of
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