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A novel fluorescence probe for the detection of Cu2+ has been designed and synthesized, which is based on a ring-opening reaction of spirolactam triggered by Cu2+ . This probe exhibits excellent Cu2+ ion selectivity as well as significant color changes visible to the naked eye at the concentration of 0.03 mM (ca. 2.0 mg/L), the WHO (World Health Organization) recommended level (2.0 mg/L) of Cu2+ ions in drinking water. This novel rhodamine-based fluorescence probe can be directly used to detect Cu2+ with satisfactory sensitivity and selectivity in aqueous solution.
A novel fluorescence probe for the detection of Cu2 + has been designed and synthesized, which is based on a ring-opening reaction of spirolactam triggered by Cu2 +. This probe exhibits excellent Cu2 + ion selectivity as well as significant color changes visible to the naked eye at the The WHO (World Health Organization) recommended level (2.0 mg / L) of Cu2 + ions in drinking water. This novel rhodamine-based fluorescence probe can be used directly to detect Cu2 + with satisfactory sensitivity and selectivity in aqueous solution.