A new tripodal rhodamine B derivative as a highly selective and sensitive fluorescence chemosensor for copper(II) |
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| Authors: | Xi Zeng Chong Wu Lei Dong Lan Mu SaiFeng Xue Zhu Tao |
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| Institution: | (1) College of Chemistry and Chemical Engineering, Guizhou University, Guiyang, 550003, China;(2) Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang, 550025, China |
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| 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.
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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| Keywords: | tripodal rhodamine B derivative copper fluorescent chemosensor |
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