Highly selective fluorescence turn-on sensor for fluoride detection

Binglin Sui, Bosung Kim, Yuanwei Zhang, Andrew Frazer, Kevin D. Belfield

Research output: Contribution to journalArticlepeer-review

126 Scopus citations

Abstract

Through click chemistry, triazole and triazolium groups have been explored to recognize anions through C-H···A- hydrogen-bonding complexion. Herein, we demonstrate evidence of fluoride-induced deprotonation of a C-H bond and its application in fluoride detection. The combination of fluorene and triazolium units produced a highly selective fluorescence turn-on prototype sensor for fluoride. The interactions between the C-H bond and F- were studied by fluorescence spectroscopy and 1H NMR titrations. Test papers were prepared to detect fluoride in aqueous media at concentrations down to 1.9 ppm, important for estimating whether the fluoride concentration in drinking water is at a safe level.

Original languageEnglish (US)
Pages (from-to)2920-2923
Number of pages4
JournalACS Applied Materials and Interfaces
Volume5
Issue number8
DOIs
StatePublished - Apr 24 2013
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

Keywords

  • anion sensor
  • fluorene
  • fluorescence sensor
  • fluoride
  • fluoride detection
  • triazolium

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