Chem. J. Chinese Universities ›› 2019, Vol. 40 ›› Issue (12): 2486.doi: 10.7503/cjcu20190354

• Analytical Chemistry • Previous Articles     Next Articles

Synthesis of a Colorimetric Fluorescent Probe of Cr 3+ and Its Application in Cell Imaging

Yingying ZHANG,Yiwen HUANG,Bing ZHAO,Liyan WANG,Bo SONG()   

  1. College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar 161006, China
  • Received:2019-06-24 Online:2019-12-04 Published:2019-12-04
  • Contact: Bo SONG E-mail:songboliu@sina.com
  • Supported by:
    ? Supported by the Science Foundation for Returnees of Heilongjiang Province, China(LC2017004);the Education Department Basic Research Business Special Foundation of Heilongjiang Province, China(135209209);the Natural Science Foundation of Heilongjiang Province, China(LH2019B021)

Abstract:

Colorimetric fluorescence probe B was synthesized from 2,3,3-trimethyl-3H-benzo[e]indole and p-dimethylaminobenzaldehyde using acidic solvent as catalyst and ethanol as solvent. In the mixed system(pH=7.4) of V(EtOH)∶V(HEPES)=9∶1, the color of solution B changed from pale yellow to purple-red after added Cr 3+ to probe B solution, indicating that probe B can recognize Cr 3+ with naked-eye. Fluorescence emission spectra shows that probe B had good selectivity of Cr 3+, high sensitivity and good recognition ability with EDTA. The binding constant(Ka) of probe B on Cr 3+ was 0.28×10 2 mol/L and the detection limit was 1.90×10 -8 mol/L. The detection limit was lower than the maximum Cr 3+ content(9.60×10 -8 mol/L) in drinking water stipulated by WHO. In addition, the concentration of Cr 3+in actual water samples was quantitatively detected by fluorescence emission spectra. Probe B has been applied to the detection of Cr 3+ in living cells, which has a good application prospect and practical value.

Key words: Benzindole, Fluorescence probe, Cr 3+, Water sample, Cell

CLC Number: 

TrendMD: