Inorganica Chimica Acta (2021)
Update date:2022-08-24
Topics:
Chen, Jichao
Gao, Buhong
Jiang, Weina
Li, Zhong
Lu, Wen
Shi, Jiuzhou
Xu, Li
Yang, Shilong
A novel acylhydrazone coumarin fluorescent chemosensor C4 for detection of Ni2+ was designed and synthesized. The experimental results revealed a low detection limit of 2.1 × 10?11 M with high selectivity and excellent sensitivity towards Ni2+. C4 showed a good linear relationship with the concentration of Ni2+ from 1.3 × 10?6 to 1.6 μM. Moreover, a stable complex was formed between C4 and with Ni2+ and the binding ratio was proved to be 2: 1 by Job's plot and mass spectrum. The sensing ability of C4 towards Ni2+ was attributed to parity-forbidden transition according to fluorescence titrations and DFT calculations. The detection of Ni2+ in water samples illustrated C4 could be successfully applied for the detection of Ni2+ in real environmental samples. What's more, the fluorescence microscopy images of Hela cells demonstrated the high potential of the novel biosensor for the investigation of biological processes involving Ni2+, as well.
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Doi:10.1016/S0022-328X(00)89090-7
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