Cd-Based Metal–Organic Framework for Selective Turn-On Fluorescent DMSO Residual Sensing |
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| Authors: | Dr Xiao-Lu Wang Dr Jia-Yue Tian Xuan-Chen Guo Prof Dr Fu-Qiang Zhang Dr Linfeng Liang Prof Dr Xian-Ming Zhang |
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| Institution: | 1. Institute of Crystalline Materials, Shanxi University, Taiyuan, 030006, Shanxi China;2. State Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, Fujian China;3. School of Chemistry and Materials Science, Shanxi Normal University, Linfen, 041001, Shanxi China |
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| Abstract: | Dimethyl sulfoxide (DMSO) is a universally used solvent in various synthetic reactions, and trace amounts of DMSO residual are often seen on the surface of chemical product. It is difficult to quickly determine whether the residual DMSO is washed completely. This work reports a CdII metal–organic framework (MOF) SXU-4 which can detect trace amounts of DMSO in various solvents. Fluorescence experiments reveal its turn-on fluorescence effect toward DMSO with high selectivity and sensitivity, indicating that it can be used as an effective luminescent probe for rapid chemical product purity detection by testing the washing solution. Crystallographically characterized DMSO loaded SXU-4 (DMSO@ SXU-4 ), in combination with computational results uncover that the enhanced DMSO–MOF conjugation through multiple DMSO–MOF supramolecule interactions and charge rearrangement are the main causes of fluorescence intensification. |
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| Keywords: | analytical chemistry coordination chemistry DMSO sensor luminescent probes metal–organic framework |
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