Abstract
A new fluorescent probe for the detection of Hg2+ was designed and synthesized via attaching N-methylisatin to rhodamine B hydrazide through an imine linkage. In an ethanol-Tris buffer medium, the addition of Hg2+ caused a strong orange fluorescence and a visual color change from colorless to pink. Other coexisting metal ions did not interfere with the detection of Hg2+. The research on the detection of Hg2+ in natural water suggested the possibility of practical applications in environment monitoring. Based on ESI-MS analysis, the Hg2+-sensing mechanism was proposed.
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Supported by the National Natural Science Foundation of China(No.21162010).
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Chen, J., Shu, W. & Wang, E. A fluorescent and colorimetric probe based on isatin-appended rhodamine for the detection of Hg2+ . Chem. Res. Chin. Univ. 32, 742–745 (2016). https://doi.org/10.1007/s40242-016-6001-1
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DOI: https://doi.org/10.1007/s40242-016-6001-1