A sugar-aza-crown ether-based fluorescent sensor for Cu2+ and Hg2+ ions

Yu Chi Hsieh, Jiun Ly Chir, Shih Tse Yang, Shau Jiun Chen, Ching Han Hu, An Tai Wu

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25 Citations (Scopus)


A sugar-aza-crown ether (SAC)-based fluorescent sensor 4 was prepared. It contains a pyrene as the fluorophore and its fluoroionophoric properties toward transition metal ions were investigated. Chemosensor 4 exhibits highly selective recognition toward Cu2+ and Hg2+ ions among a series of tested metal ions in methanol solution. The association constants for 4Cu 2+ and 4Hg2+ in methanol solution were calculated to be 7.4 × 101 M-1 and 4.4 × 103 M -1, respectively. Chemosensor 4 formed complexes with the Cu 2+ or Hg2+ ion at a 1:1 ligand-to-metal ratio with a detection limit of 1.3 × 10-4 M Cu2+ and 1.26 × 10-5 M Hg2+, respectively.

Original languageEnglish
Pages (from-to)978-981
Number of pages4
JournalCarbohydrate Research
Issue number7
Publication statusPublished - 2011 May 15

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Biochemistry
  • Organic Chemistry

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