Anion recognition by a pyrene derivative with a thiourea function

Seiichi Nishizawa, Norio Teramae

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)


A novel fluorescent indicator for anions, which contains both a fluorescent pyrenyl moiety and a thiourea group as a recognition site, is described. Hydrogen bond-mediated complexation with oxo anions such as CH3COO- and H2PO4- induces a dual fluorescence consisting of two bands, namely, a normal emission due to the pyrene unit and an anomalous long-wavelength emission. The intensity of the new emission increases as anion concentration increases, while the normal emission is relatively unaffected. The degree of the changes is in the order of CH3COO- > H2PO4- ≫ ClO4-, reflecting the binding selectivity of the probe molecule.

Original languageEnglish
Pages (from-to)485-488
Number of pages4
JournalAnalytical Sciences
Issue numberSUPPL.
Publication statusPublished - 1997


  • Anion recognition
  • Dual fluorescence
  • Fluorescent indicator
  • Hydrogen bond
  • Neutral receptor
  • Pyrene
  • Thiourea


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