Solvent controlled sugar-rhodamine fluorescence sensor for Cu(2+) detection.
A "turn-on" fluorescence probe for Cu(2+) detection has been reported according to a Cu(2+) triggered spirolactam ring-opening reaction. The probe is a double-responsive fluorescent and colorimetric Cu(2+)-specific sensor in aqueous solution containing 20% of acetonitrile with high selectivity and excellent sensitivity (limit of detection is 12 μg L(-1)). Furthermore, the significant color changes visible to the naked eye at the concentration of 3 μM (ca. 0.20 mg L(-1)) are about ten times lower than the WHO (World Health Organization) recommended level (2.0 mg L(-1)) for Cu(2+) ions in drinking water.
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China.
Xing
X
Ma
Zhuowei
Z
Tan
Guohua
G
Wei
Dongbin
D
Wei
Yuguo
Y
Du
D002241:Carbohydrates / Q000737:chemistry*; D003300:Copper / Q000032:analysis*; D060766:Drinking Water / Q000737:chemistry*; D005456:Fluorescent Dyes / Q000737:chemistry*; D006801:Humans; D012235:Rhodamines / Q000737:chemistry*; D012680:Sensitivity and Specificity; D012997:Solvents / Q000737:chemistry*; D013050:Spectrometry, Fluorescence / Q000379:methods
D002241:Carbohydrates; D060766:Drinking Water; D005456:Fluorescent Dyes; D012235:Rhodamines; D012997:Solvents; D003300:Copper