Journal
INORGANIC CHEMISTRY
Volume 59, Issue 8, Pages 5386-5393Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.inorgchem.9b03635
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Funding
- Natural Science Foundation of Heilongjiang Province [QC2018007]
- Fundamental Research Funds for the Central Universities [2572019BC08]
- Natural Science Foundation of Jilin Province [20180101290JC]
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A series of eosin Y (EY)-embedded zirconium-based metal-organic frameworks (Zr-MOFs) were prepared by utilizing the synthetic encapsulating method. By virtue of effective resonant energy transfer between Zr-MOF and EY, not only does EY@ZrMOF exhibit dual-emissive characteristics, but also the relative intensity of their double emission is greatly tuned with increasing EY loading quantity. As a consequence, the double emission of EY@ZrMOF presented large distinctions in location and intensity. By using the relative fluorescence intensity instead of the absolute fluorescence intensity of emission peaks as detection signals, two EY@Zr-MOFs served as built-in self-calibrated fluorescence sensors to detect pesticides, where EY@Zr-MOF realized the selective detection of nitenpyram, a kind of nicotine pesticide. These results indicate that the integration of robust Zr-MOF and fluorescence molecules provides a new research platform for pesticide sensing and recognition.
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