Citation: CHEN Zhao-Hui, LI Yuan-Yuan, HAN Juan, WANG Yun, REN Yan-Peng, CHEN Tong, TANG Xu, NI Liang. Synthesis and Biological Application of A Water-Soluble Fluorescent Probe Based on Coumarin Derivatives for Detection of Ferric Ion[J]. Chinese Journal of Analytical Chemistry, ;2018, 46(1): 20-26. doi: 10.11895/j.issn.0253-3820.170114
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A water-soluble fluorescent probe (7-diethyl amino-3-formaldehyde coumarin) for Fe3+ detection was designed and synthesized, and its structure was confirmed by 1HNMR, 13CNMR and MS spectra. This probe showed high emission intensity at 471 nm. With the continuous addition of Fe3+, the emission intensities at 471 nm decreased gradually, and showed an excellent linearity with Fe3+ in the range of 0.02-60 μmol/L, and the regression equation was I=322.56-4.86CFe3+. This probe was able to detect Fe3+ qualitatively and quantitatively with the detection limit as low as 22 nmol/L. Besides, this probe showed high sensitivity to Fe3+ over other metal ions. The detection process was reversible, which could be recycled for the Fe3+ detection. In terms of good optical properties and the strong fluorescence in physiological pH, the probe was successfully applied in imaging Fe3+ of living Ramos cells.
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Keywords:
- Fluorescent probe,
- Ferric ion,
- Water solubility,
- Cell imaging
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