A new phosphorescent chemosensor bearing Zn-DPA sites for H 2PO4 -

Hye Bin Kim, Yifan Liu, Dayoung Nam, Yinan Li, Sungnam Park, Juyoung Yoon, Myung Ho Hyun

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21 Citations (Scopus)


A phosphorescence chemosensor bearing an iridium (III) complex as a communicating source and two Zn-DPA units acting as a preorganized binding site for H2PO4 - is presented. The phosphorescent chemosensor displayed a selective phosphorescence enhancement with H 2PO4 - in aqueous solution and at neutral pH. On the other hand, F-, Cl-, Br-, I-, NO3 -, CH3COO-, and ClO 4 - did not induce significant changes in phosphorescence. Furthermore, the phosphorescent chemosensor shows selectivity for H 2PO4 - over the related phosphate species, such as ATP and pyrophosphate. In addition, there was a distinct lifetime change only for H2PO4 -. The association constant was calculated to be 9.68 × 104 M-1 for H 2PO4 -.

Original languageEnglish
Pages (from-to)20-24
Number of pages5
JournalDyes and Pigments
Publication statusPublished - 2014 Jan 1



  • Anion recognition
  • Dihydrogen phosphate sensing
  • Iridium complex
  • Phosphate sensor
  • Phosphorescence chemosensor
  • Zinc complex

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Process Chemistry and Technology

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