The application of a pyrene-based fluorescent probe in antimony detection
Py-P,a simple fluorescent probe,was designed and synthesized by using pyrene as fluorogen to achieve the simple and efficient detection of Sb(Ⅲ).The chemical structure of Py-P was confirmed,its thermal stability,solvent stability,and mechanical stability were tested,its fluorescent property in the mixtures of DMSO and H2O were characterized,and its fluorescent response to Sb(Ⅲ)was investigated.The results showed that,Py-P presented good thermal stability,and its luminescence performance could be maintained in different organic solvents as well as under mechanical forces.In the mixtures of DMSO and H2O,Py-P could emit excimer fluorescence.When the water fraction of the mixture was 70％,and the concentration of Py-P was 50 μmol/L,Py-P displayed the optimal enhanced fluorescent response to Sb(Ⅲ)owing to the coordination between Sb(Ⅲ)and the functional group of Py-P,with the highest emission enhancement reaching 12.55,and the lowest detection limit being 1.29 μmol/L.What's more,the detection process was not influenced by other kind of cations,indicating its good selectivity and specificity.This study can provide some technical reference for the development of fluorescence probes for Sb(Ⅲ)detection.
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