Ratiometric and selective fluorescent chemodosimeter for Cu(II) by Cu(II)-induced oxidation.
A new rhodamine derivative, rhodamine B 4-N,N-dimethylaminobenzaldehyde hydrazone (1), was designed for ratiometric sensing of Cu(II) selectively. A red-shift from 515 to 585 nm was observed in the fluorescence spectrum when Cu(II) was added to 1 in acetonitrile. Other metal ions of interest showed no ratiometric response. The interaction between Cu(II) and 1 was found to be the Cu(II)-induced oxidation of 1.
Xiang
Yu
Y
Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Department of Chemistry, Tsinghua University, Beijing 100084, People's Republic of China.
Tong
Aijun
A
D003300:Copper / Q000737:chemistry*; D005456:Fluorescent Dyes / Q000138:chemical synthesis / Q000737:chemistry*; D006835:Hydrazones / Q000138:chemical synthesis / Q000737:chemistry*; D015394:Molecular Structure; D010084:Oxidation-Reduction; D012235:Rhodamines / Q000138:chemical synthesis / Q000737:chemistry*; D012680:Sensitivity and Specificity; D013050:Spectrometry, Fluorescence / Q000379:methods
D005456:Fluorescent Dyes; D006835:Hydrazones; D012235:Rhodamines; C528086:rhodamine B 4-N,N-dimethylaminobenzaldehyde hydrazone; D003300:Copper