期刊
CRYSTAL GROWTH & DESIGN
卷 20, 期 6, 页码 3584-3589出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.cgd.0c00211
关键词
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资金
- National Natural Science Foundation of China [21901060, 21871076]
- Natural Science Foundation of Hebei Province [B2015205116, B2016205051, B2019205074]
A rare basket-like Gd3+-encapsulated {Gd subset of(P6Mo2Mo16O73)-Mo-V-O-VI} cage has been successfully synthesized with the formula of (H-2 bpp)(6){(GdMo2Mo16O49)-Mo-V-O-VI-(HPO4)(PO4)(5)}(2)center dot 11H(2)O (1) (bpp is 1,3-bi(4-pyridyl)propane). Crystal 1 displays electrochemically reversible redox behavior and fluorescent property, and can serve as a bifunctional electrochemical sensor and fluorescent probe for efficiently detecting chromium (Cr(VI)) in water. As electrochemical sensor, compound 1 showed good electrochemical activity for trace Cr(VI) with a high sensitivity of 0.151 mu A center dot mu M-1 and low detection limit of 0.202 mu M (0.021 ppm). These parameters fully met the WHO standards. When using as fluorescence probe, the detection limit of compound 1 is as low as 8.7 mu M for Cr(VI) in water.
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