Russian Journal of Organic Chemistry

, Volume 55, Issue 6, pp 866–873 | Cite as

A Novel Fluorescent Probe Based on Spiro[chromeno[2,3-c]pyrazole-4,1′-[2]benzofuran]-3′-one for Detecting Copper(II) ions in Aqueous Solution

  • Yongshuang Yue
  • Zhengfeng XieEmail author
  • Yicheng Chu
  • Wei Shi


A novel fluorescent probe, DHMP {7-(dibutylamino)-3-methyl-1H,3′H-spiro[chromeno[2,3-c]pyrazole-4,1′-[2]benzofuran]-3′-one} was designed and synthesized by condensation of 2-[4-(dibutylamino)-2-hydroxybenzoyl]benzoic acid with 5-methyl-2,4-dihydropyrazol-3-one. The ultraviolet absorption and fluorescence emission spectra of DHMP showed a clear pH dependence and highly selective and sensitive response to copper(II) ions in aqueous medium. The detection limit of Cu2+ was estimated at 9.05 × 10−8 M.


1,4-dihydrochromeno[2,3-c]pyrazole 7-(dibutylamino)-3-methyl- 1H,3′H-spiro[chromeno [2,3-c]-pyrazole-4,1′-[2]benzofuran]-3′-one fluorescent probe copper ion detection pH aqueous medium 


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Copyright information

© Pleiades Publishing, Ltd. 2019

Authors and Affiliations

  • Yongshuang Yue
    • 1
  • Zhengfeng Xie
    • 1
    Email author
  • Yicheng Chu
    • 1
  • Wei Shi
    • 1
  1. 1.Oil & Gas Field Applied Chemistry Key Laboratory of Sichuan Province, College of Chemistry and Chemical EngineeringSouthwest Petroleum UniversityChengduChina

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