Rhodamine based fluorescent chemosensors for Hg 2+ and its biological application

Ji Young Choi, Wantae Kim, Juyoung Yoon

Research output: Contribution to journalArticlepeer-review

14 Scopus citations


Two new chemosensors, rhodamine 6G derivative bearing hydroxyethyl group (1) and rhodamine base derivative bearing 15-crown-5 group (2) were synthesized and their sensing behaviors toward various metal ions were investigated by UV/Vis and fluorescence spectroscopies. Addition of Hg 2+ ion to a CH3CN solution of 1 and 2 gave visual color changes as well as fluorescent OFF-ON observations. Selectivity and sensitivity of 1 towards Hg 2+ are excellent enough to detect micromolar level of Hg 2+ ion, even in equeous media and biological sample (HeLa cell).

Original languageEnglish
Pages (from-to)2359-2364
Number of pages6
JournalBulletin of the Korean Chemical Society
Issue number7
StatePublished - 20 Jul 2012


  • Colorimetric sensor
  • Fluorescent sensor
  • Hg(II) sensor
  • Mercury ion sensor
  • Rhodamine


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