Journal
LUMINESCENCE
Volume 33, Issue 1, Pages 219-224Publisher
WILEY
DOI: 10.1002/bio.3404
Keywords
carbonothioate; excited-state intramolecular proton transfer (ESIPT); fluorescent probe; mercury ions (Hg2+); Stokes shift
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Funding
- Ministry of Water Resources Public Welfare Industry Research Special Project [201401001]
- Major Livelihood Projects of Jinan [SHMS2015-3-01]
- Shandong Province Key Research and Development Project [2016GSF117010]
- Outstanding Young Scientists Award Fund of Shandong Province [BS2013HZ007]
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Mercury (Hg) is one of the heavy metal pollutants in the environment. Even a very small amount of mercury can cause serious harm to human beings. Herein, we reported a new carbonothioate-based fluorescent probe for the detection of Hg2+ without interference from other metal ions. This probe possessed a very large Stokes shift (192 nm), which could improve the detection sensitivity by minimizing the interferences resulted from self-absorption or auto-fluorescence. With the addition of Hg2+ to the probe solution, considerable fluorescence enhancement was observed. Additionally, the Hg2+ concentration of 0-16 mu M and fluorescence intensity showed a good linear relationship (y = 22106x + 53108, R-2 = 0.9955). Finally, the proposed probe was used to detect Hg2+ in real water samples, and its result was satisfactory. Therefore, our proposed probe would provide a promising method for the determination of Hg2+ in the environment.
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