Synthesis of highly selective indole-based sensors for mercuric ion

Huei Jyun Huang, Jiun Ly Chir, Hsiu Jung Cheng, Shau Jiun Chen, Ching-Han Hu, An-Tai Wu

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4 Citations (Scopus)


Two indole-based fluorescent chemosensors 1 and 2 were prepared and investigated characteristic features with transition metal ions. Sensors 1 and 2 were selective for Hg 2+ ion, among a series of metal ions, in aqueous ethanol (H 2O-EtOH, 1:2, v/v) with association constants of 5.74×10 3 and 4.46×10 3 M -1 and detection limits of 7.4 and 6.8 μM, respectively. Computational results revealed that sensor 1 or 2 with Hg 2+ ion formed 1:1 complex with a central, sandwichcoordinated Hg 2+ ion. Computational calculations provided evidence that a sandwich-coordinated Hg 2+ ion center was formed and the polyoxyethylene spacer acted as a scaffold for bringing functional ligands into a suitable geometry.

Original languageEnglish
Pages (from-to)1021-1026
Number of pages6
JournalJournal of Fluorescence
Issue number3
Publication statusPublished - 2011 May 1

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Clinical Psychology
  • Social Sciences (miscellaneous)
  • Sociology and Political Science
  • Spectroscopy
  • Clinical Biochemistry
  • Law

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