New 7-hydroxycoumarin-based fluorescent chemosensors for Zn(II) and Cd(II)

K. M.K. Swamy, Min Jung Kim, Hye Ryeong Jeon, Ji Young Jung, Juyoung Yoon

Research output: Contribution to journalArticlepeer-review

37 Scopus citations

Abstract

Five new 4- or 8-substituted-7-hydroxycoumarin derivatives (1-5) were synthesized as fluorescent sensors for metal ions. Fluorescent changes and selectivity for metal ions were compared based on the introduction of different ligands and/or testing with different substitution positions of 7-hydroxycoumarin in aqueous solution. Especially, probes 2, 3 and 5 displayed large fluorescence enhancements with Zn2+ and Cd2+. Probes 2 and 3 showed moderate selectivity for Zn2+ over Cd2+. On the other hand, probe 4 showed large fluorescence quenching effects upon the addition of Ag+ and Hg2+.

Original languageEnglish
Pages (from-to)3611-3616
Number of pages6
JournalBulletin of the Korean Chemical Society
Volume31
Issue number12
DOIs
StatePublished - 20 Dec 2010

Keywords

  • Cd sensor
  • Coumarin
  • Fluorescence
  • Fluorescent chemosensors
  • Zn sensor

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