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Bisthiocarbohydrazones as colorimetric and "turn on" fluorescent chemosensors for selective recognition of fluoride

Industrial and Engineering Chemistry Research, ISSN: 0888-5885, Vol: 50, Issue: 22, Page: 12379-12383
2011
  • 33
    Citations
  • 0
    Usage
  • 17
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    33
    • Citation Indexes
      33
  • Captures
    17

Article Description

Bisthiocarbohydrazone derivatives of two heterocyclic ketones were designed and synthesized to selectively sense fluoride ion from a biologically competing solvent dimethylsulfoxide (DMSO). The selective recognition of fluoride is clearly visible to the naked eye with a distinct color change. The recognition mechanism has been investigated by UV-visible, fluorescence spectroscopy, and H NMR titration experiments. From the Benesi-Hidebrand equation and Job's plot, it was inferred that both compounds bind to fluoride with a 1:1 stoichiometry. H NMR titration data indicates deprotonation of the NH protons by fluoride as a prominent step in the recognition. © 2011 American Chemical Society.

Bibliographic Details

Saravana Loganathan Ashok Kumar; Ramalingam Tamilarasan; Moorthy Saravana Kumar; Anandram Sreekanth

American Chemical Society (ACS)

Chemistry; Chemical Engineering; Engineering

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