Chinese Journal of Applied Chemistry ›› 2020, Vol. 37 ›› Issue (1): 88-95.DOI: 10.11944/j.issn.1000-0518.2019.01.190180

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A Benzoindole-Based Probe for Recognition of Al3+ and Its Application

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

  1. College of Chemistry and Chemical Engineering,Qiqihar University,Qiqihar,Heilongjiang 161006,China
  • Received:2019-06-27 Accepted:2019-06-27 Published:2020-01-08 Online:2020-01-08
  • Contact: SONG Bo
  • Supported by:
    Supported by the People's Government of the Returned Overseas Chinese in Heilongjiang Province(No.LC2017004), the Special Project of Basic Scientific Research Business of Education Department of Heilongjiang Province(No.135209209), and the Joint Guidance Project of Natural Science Foundation of Heilongjiang Province(No.LH2019B021)


A simple fluorescence probe based on benzoindole (H) was designed and synthesized. The recognition performance of the probe for metal cations was studied by ultraviolet-visible absorption spectrophotometry (UV-Vis) and fluorescence emission spectra. The results show that probe H in the mixed system of ethanol (EtOH) and 4-(2-hydroxyethyl)piperazine-1-ethanesulfonic acid(HEPES)(pH=7.4)(volume ratio 1:1) has specific recognition of Al3+ and is not impacted by other metal cations. The complex ratio of probe H and Al3+ is 1:1, the association constant Ka is 0.52×102 mol/L and the detection limit is 1.75 μmol/L. The quantitative detection of Al3+ in water and food samples proves that the probe has potential applications.

Key words: fluorescence probe, water sample, benzoindole, Al3+