A highly Selective Fluorescent Chemosensor for Zn 2+ Based on the Rhodamine Derivative Incorporating Coumarin Group

A coumarin-appended rhodamine derivative was prepared by reacting rhodamine hydrazide and coumarin-3-carboxylic acid, which fluorescence sensing behavior toward Zn against other metal ions was investigated in CH CN. Significantly, the rodamine-coumarin derivative exhibited highly selective and sensi...

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Bibliographic Details
Published in:Journal of fluorescence 2017-03, Vol.27 (2), p.629
Main Authors: Wang, Kun-Peng, Jin, Zhi-Hui, Shang, Hui-Shi, Lv, Cheng-Dong, Zhang, Qi, Chen, Shaojin, Hu, Zhi-Qiang
Format: Article
Language:English
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Summary:A coumarin-appended rhodamine derivative was prepared by reacting rhodamine hydrazide and coumarin-3-carboxylic acid, which fluorescence sensing behavior toward Zn against other metal ions was investigated in CH CN. Significantly, the rodamine-coumarin derivative exhibited highly selective and sensitive recognition toward Zn with a limit of detection (LOD) down to 10  M. Upon addition of Zn , remarkable fluorescent intensities enhanced and also clear color changed from colorless to pink. The Job's plot indicated the formation of 1:1 complex between the rhodamine-coumarin derivative and Zn . The presence of common coexisting alkali, alkaline earth, and transition metal ions showed small or no interference with the detection of Zn . The conjugate dye could be used for "naked-eye" detection of Zn .
ISSN:1573-4994