A novel symmetric bianthracene derivative (D2) containing one benzene ring and two ethyl thioglycolates connecting to the benzene ring on both sides of the bianthracene unit was designed and synthesized. D2 can detect Fe and Hg in acetonitrile/water (6:4, v/v) solution via different changes of absorbance and fluorescence in the pH range from 3 to 10. D2 exhibits high colorimetric sensitivity for Fe with low detection limit (1.87 × 10 mol/L). The absorbance intensity of D2 in acetonitrile/water solution show a linear response to Fe in the wide concentration range of 0 -1000 μM, which is beneficial for quantitative analysis. D2 also displays highly selective fluorescent sensing for Hg with a low detection limit of 1.07 µM over other metal ions and can accurately detect the existence of Hg in water samples.
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| http://dx.doi.org/10.1016/j.saa.2021.119955 | DOI Listing |
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