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A Novel Ratiometric Fluorescent Probe for Mercury (II) ions and Application in Bio-imaging
Qianmiao Gao1, Yang Jiao2,3, Cheng He4
1State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China. gaoqianmiao@outlook.com.
Abstract:
Since the accumulation of mercury (II) ions in the environment and ecosystem causes serious problems to environment and disease, the recognition of Hg2+ ions and its bio-imaging is of high importance. In sight of the advantages of fluorescence probes, a new probe (PMH) was facilely synthesized by incorporating phenylimidazole fluorophore and 3-methyl-2- benzothiazolinone hydrazone hydrochloride monohydrate. The PMH probe exhibited a ratiometric response for Hg2+ ions with fluorescence intensity increasing at 520 nm and decreasing at 445 nm simultaneously. The PMH probe interacted with Hg2+ ions in seconds with high optical stability and showed good selectivity over other metal ions. In addition, the probe has excellent biocompatibility and imaging performance in cells and zebrafish.
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