A pyrenyl-appended triazole-based ribose as a fluorescent sensor for Hg2+ ion

Kuan Hao Chen, Cheng Yi Lu, Hsiu Jung Cheng, Shau Jiun Chen, Ching-Han Hu, An-Tai Wu

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38 Citations (Scopus)


For the efficient detection of toxic trace metal ions, two pyrenyl-appended triazole-based d-ribose fluorescent chemosensors 6 and 7 were prepared and their fluoroionophoric properties toward transition metal ions were investigated. Chemosensors 6 and 7 exhibit highly selective recognition toward Hg2+ ion among a series of tested metal ions in CH2Cl 2/MeOH solution. The association constants of 6 and 7 are calculated to be 1.73 × 105 M-1 and 4.44 × 105 M-1, respectively. Both 6 and 7 formed complexes with the Hg 2+ ion at a 1:1 ligand-to-metal ratio with a detection limit of 10-15 μM Hg2+. Computational analysis demonstrated that the Hg 2+ ion occupied the coordination center of 6 with N2 and N3 atoms in two triazole groups, thus separating and distorting the two parallel pyrenes away from each other.

Original languageEnglish
Pages (from-to)2557-2561
Number of pages5
JournalCarbohydrate Research
Issue number17
Publication statusPublished - 2010 Nov 22

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Biochemistry
  • Organic Chemistry

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