Quinoline-based highly selective and sensitive fluorescent probe specific for Cd2+ detection in mixed aqueous media |
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Authors: | Xiaohu Ding Feifei Zhang Yinjuan Bai Junxia Zhao Xia Chen Man Ge Wei Sun |
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Affiliation: | Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi’an, Shannxi 710127, PR China |
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Abstract: | Quinoline-based fluorescent probe as a recognition unit was designed and synthesized in this study. The probe R1 displayed excellent selectivity and sensitivity for cadmium ions (Cd2+) over a wide range of metal ions in acetonitrile-water (MeCN-H2O) mixed solution. In order to better understand the recognition mechanism between probe and Cd2+, the density functional theory calculations were performed. Finally, the colorimetric experiment result was observed and conveniently monitored by the naked eye, and a visual detection limit of 4 × 10?6 mol L?1 was achieved. These experimental results indicated the promising potential of the probe to detect Cd2+ in biological system. Furthermore, the probe R1 was successfully used for the highly sensitive detection of Cd2+ in living cells. |
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Keywords: | Fluorescent probe Quinoline Cadmium(II) ions Recognition Density functional theory calculations |
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