Abstract
A double doped Eu-Tb metal-organic frameworks Eu0.5Tb1(btc)1.5 was synthesized by coprecipitation with H3btc as ligand. By screening 15 organic compounds and 9 pesticides, Eu0.5Tb1(btc)1.5 presents excellent sensitivity and selectivity to sense pyridine, methyl methacrylate, thidiazuron and uniconazole as a multi-responsive luminescent sensor. The detection limits of the four samples reached 10-6 mol/L, and the usage of pesticide on plant leaves can be detected by naked eyes based on luminescent sensing. The result of the cyclic experiment shows that Eu0.5Tb1(btc)1.5 has ideal reusability. More importantly, the mechanism of fluorescence quenching caused by competitive light absorption between Eu-Tb(btc) and organic compounds (or pesticide) was revealed. This work constructed a model of the sensing mechanism, which provides a possible application for the sensing of other organic substances.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
