A selective carbazole-based fluorescent probe for chromium(iii)

Jiangang Zhang, Li Zhang, Yanli Wei, Jianbing Chao, Songbai Wang, Shaomi Shuang, Zongwei CAI, Chuan Dong*

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

28 Citations (Scopus)


A novel carbazole derivative, N,N′-bis(9-ethyl-9H-carbazol-3-yl)- (ethane-1,2-diamine), has been synthesized by reacting 3-amino-9-ethylcarbazole with glyoxal and characterized by 1H NMR, infrared spectroscopy, elemental analysis and mass spectra. The strong fluorescence emission at 438 nm of the derivative is effectively and selectively quenched by Cr3+. A 1:1 complex is formed between the carbazole derivative and Cr3+ and their association constant is 1.4 × 104 L mol-1. The results indicate that the carbazole derivative can provide a rapid, selective and sensitive response to Cr3+ in a linear dynamic range 1.0-20 μmol L-1 with a limit of detection of 0.10 μmol L-1 at pH 7.4. Common interferent ions do not show any interference with the Cr 3+ determination. It is anticipated that the carbazole derivative could be a good candidate probe and has potential application for Cr 3+ determination.

Original languageEnglish
Pages (from-to)5549-5554
Number of pages6
JournalAnalytical Methods
Issue number20
Publication statusPublished - 21 Oct 2013

Scopus Subject Areas

  • Analytical Chemistry
  • Chemical Engineering(all)
  • Engineering(all)


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