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A novel fluorescence “turn-on” probe for Cu2+ detection has been designed based on a Cu2+ triggered spirolactam ring-opening reaction.The synthetic probe is a double-responsive fluorescent and colorimetric Cu2+-specific sensor.In aqueous solution,it exhibits high selectivity and excellent sensitivity.With a significant color change visible to the naked eye at the concentration of 3 μM(ca.0.19 mg/L),about one magnitude lower than the WHO(World Health Organization) recommended level(2.0 mg/L) for Cu2+ ions in drinking water,the probe could be used to monitor Cu2+ ions in drinking water.
A novel fluorescence “turn-on” probe for Cu2 + detection has been designed based on a Cu2 + triggered spirolactam ring-opening reaction. The synthetic probe is a double-responsive fluorescent and colorimetric Cu2 + -specific sensor.In aqueous solution, it exhibits high selectivity and excellent sensitivity. With a significant color change visible to the naked eye at the concentration of 3 μM (ca.0.19 mg / L), about one magnitude lower than the WHO (World Health Organization) recommended level (2.0 mg / L ) for Cu2 + ions in drinking water, the probe could be used to monitor Cu2 + ions in drinking water.