Chin. J. Org. Chem. ›› 2017, Vol. 37 ›› Issue (4): 896-901.DOI: 10.6023/cjoc201611014 Previous Articles     Next Articles



李英俊a, 李继阳a, 许永廷a, 靳焜b, 曹欣a   

  1. a. 辽宁师范大学化学化工学院 大连 116029;
    b. 大连理工大学精细化工国家重点实验室 大连 116012
  • 收稿日期:2016-11-12 修回日期:2016-12-26 发布日期:2017-01-17
  • 通讯作者: 李英俊
  • 基金资助:


Highly Selective Naked-Eye and Fluorescence Probe for Cu2+ Based on Carbazole Schiff-Base

Li Yingjuna, Li Jiyanga, Xu Yongtinga, Jin Kunb, Cao Xina   

  1. a. College of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian 116029;
    b. State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116012
  • Received:2016-11-12 Revised:2016-12-26 Published:2017-01-17
  • Contact: 10.6023/cjoc201611014
  • Supported by:

    Project supported by the Natural Science Foundation of Liaoning Province (No. 20102126).

A new fluorescence probe L based on carbazole Schiff-base for Cu2+ was synthesized. The recognition ability of probe L to metal ions was investigated by UV-Vis and fluorescence spectra. The experimental results showed that the probe L in CH3CN displayed a distinct color change from yellow to colorless upon the addition of Cu2+, which can be directly detected by the naked eye for Cu2+. The fluorescence spectra showed that the probe L had high selective and sensitive recognition toward Cu2+ in CH3CN, the fluorescence intensity was increased with the increase of Cu2+ concentration, and it was not affected by other metal ions. The association constant between the probe L and Cu2+ was detected to be 1.38×104 L/mol and the corresponding detection limit was calculated to be 2.34×10-7 mol/L. The detection limit of L for Cu2+ was far lower than the maximum allowable level of the WHO limit (20 mmol/L) for drinking water. The results indicate that the probe L should be applicable to the research on the environmental applications associated with Cu2+.

Key words: carbazole, Schiff base, naked-eye recognition, Cu2+ fluorescence probe