Abstract
A novel colorimetric and off–on fluorescent chemosensor 2 was designed and synthesized, which showed reversible and highly selective and sensitive recognition toward Cr3+ over other examined metal ions in aqueous solution. Upon addition of Cr3+, the solution of chemosensor 2 resulted in a color change from colorless to obvious pink color, these significant changes in color could be used for naked-eye detection. Chemosensor 2 exhibited a stable response for Cr3+ in the range 0–10 μM with a detection limit of 1 ppm. Furthermore, fluorescence imaging experiments of Cr3+ ions in living MGC803 cells demonstrated its value of practical applications in biological systems.
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This work was financially supported by the National Science Foundation of China (nos. 20972143, 20972130) and Program for New Century Excellent Talents in University (NCET-11-0950).
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Li, M., Zhang, D., Liu, Y. et al. A Novel Colorimetric and Off–On Fluorescent Chemosensor for Cr3+ in Aqueous Solution and its Application in Live Cell Imaging. J Fluoresc 24, 119–127 (2014). https://doi.org/10.1007/s10895-013-1275-x
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DOI: https://doi.org/10.1007/s10895-013-1275-x