Highly selective and sensitive fluorescent chemosensor for Hg 2+ in aqueous solution

Hsiu Han Wu, Yao Lin Sun, Chin Feng Wan, Shih Tse Yang, Shau Jiun Chen, Ching Han Hu, An Tai Wu

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


A new indole-based fluorescent chemosensor 1 was prepared and its metal ion sensing properties were investigated. It exhibits high sensitivity and selectivity toward Hg 2+ among a series of metal ions in H 2O-EtOH (7:1, v/v). The association constant of the 1:1 complex formation for 1-Hg 2+ was calculated to be 9.57 × 10 3 M -1, and the detection limit for Hg 2+ was found to be 2.25 × 10 -5 M. Computational results revealed that 1 and Hg 2+ ion formed with a central tetrahedron-coordinated Hg 2+.

Original languageEnglish
Pages (from-to)1169-1172
Number of pages4
JournalTetrahedron Letters
Issue number9
Publication statusPublished - 2012 Feb 29

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Drug Discovery
  • Organic Chemistry

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