Abstract
A new tripodal rhodamine B derivative 2 was designed and synthesized by tripodal trialdehyde and rhodamine B hydrazide for the first time. This derivative could be used as a fluorescent chemosensor for the selective and sensitive determination of copper(II) in Tris-HCl buffer and ethanol aqueous mixed media. Under the optimum conditions described herein, fluorescence enhancement at 557/577 nm was linearly related to the concentration of copper(II) in the range of 0.10 to 10.00×10−5 mol·L−1, with a correlation coefficient of R 2=0.9964 (n=15) and a detection limit of 1.129×10−7 mol·L−1 (the relative standard deviation for five repeated measurements at 4.00×10−5 mol·L−1 Cu(II) was 2.2%). The absorbance measurements at 557 nm were linearly related to the concentration of Cu(II) in the range of 0.50 to 25.00×10−5 mol·L−1, with a correlation coefficient of R 2=0.9948 (n=13) and a detection limit of 3.338×10−7mol·L−1.
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Supported by the Foundation of the Governor of Guizhou Province, China (Grant No. 200617) and the Talented Person Foundation of Guizhou University (Grant No. 2007039)
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Zeng, X., Wu, C., Dong, L. et al. A new tripodal rhodamine B derivative as a highly selective and sensitive fluorescence chemosensor for copper(II). Sci. China Ser. B-Chem. 52, 523–528 (2009). https://doi.org/10.1007/s11426-009-0098-8
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DOI: https://doi.org/10.1007/s11426-009-0098-8