Selective Fe2+ ion recognition using a fluorescent pyridinyl-benzoimidazole-derived ionophore

Jeong Ah Lee, Geun Hee Eom, Hyun Min Park, Ju Hoon Lee, Hyesun Song, Chang Seop Hong, Sungho Yoon, Cheal Kim

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)


Fluorescent organic molecules that respond to changes in the Fe 2+ concentration with selectivity to other abundant di-valent metal ions will offer the ability to understand the dynamic fluctuations of the Fe2+ ion in interesting media. The use of 6-Br-ppmbi, derived from 2-pyridin-2-yl-benzimidazole, for metal ion-selective fluorescence recognition was investigated. Screening of the main group and transition metal ions showed exclusive selectivity for Fe2+ ions even in the presence of competing metal ions. In addition, the requirement for low concentrations of probe molecules to detect certain amounts of Fe2+ ions make this sensor unique compared to previously reported Fe2+ ion sensors.

Original languageEnglish
Pages (from-to)3625-3628
Number of pages4
JournalBulletin of the Korean Chemical Society
Issue number11
Publication statusPublished - 2012 Nov 20


  • 6-Br-ppmbi
  • Fe cation
  • Fluorescent chemical sensor

ASJC Scopus subject areas

  • General Chemistry


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