Fluorometric detection of fluoride ion by ligand exchange reaction with 3-hydroxyflavone coordinated to a zirconium(iv)–EDTA complex

Yukiko Takahashi, David A. Pacheco Tanaka, Hideyuki Matsunaga, Toshishige M. Suzuki

Research output: Contribution to journalArticlepeer-review

35 Citations (Scopus)

Abstract

An aqueous solution composed of [Zr(H2O)2edta]·2H2O and 3-hydroxyflavone (flavonol) exhibits an intense blue fluorescence (Λmax = 460 nm) upon excitation at 400 nm and the signal intensity decreases with the addition of fluoride ion. This observation has been interpreted by the ligand exchange of flavonol coordinated to Zr(iv) with fluoride ion. Based on this phenomenon, we have fabricated a simple fluorescent detection system of fluoride ion available in aqueous media. The present signaling system provides a simple, rapid and selective detection method of fluoride ion, which covers the concentration range from 1 × 10−3 to 3 × 10−6 M without any significant interference from common anions.

Original languageEnglish
Pages (from-to)759-762
Number of pages4
JournalJournal of the Chemical Society. Perkin Transactions 2
Volume2
Issue number4
DOIs
Publication statusPublished - 2002 Mar 25
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)

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