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A highly selective colorimetric and long-wavelength fluorescent probe for the detection of Hg 2 .

Currently, the fluorescent probe is an important method for detecting heavy metal ions, especially mercury ion (Hg2+ ), which is harmful to the health of humans and the environment due to its toxicity and extensive use. In this paper, we designed and synthesized a colorimetric and long-wavelength fluorescent probe Hg-P with high sensitivity and excellent selectivity, which could detect Hg2+ by the changes of visual color, fluorescence and absorption spectroscopy. With the addition of Hg2+ to probe Hg-P solution, its color changed from yellow to pink, and showed a 171 nm red-shifted absorption spectrum. Probe Hg-P was used in real water and soil solution samples to detect Hg2+ , and the result is satisfactory. Therefore, this new probe shows great value and application in detecting Hg2+ in the environment.

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