A New Fluorescent Sensor for the Determination of Iron(III) in Semi-Aqueous Solution

Maria Jose Casanueva Marenco, Colin Fowley, Barry W. Hyland, Dolores Galindo-Riano, Suban K. Sahoo, John F. Callan

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

A simple fluorescent sensor has been developed for the recognition of Fe(III) in semi-aqueous solution at pH 7.0. The sensor, containing two Schiff base type receptors directly connected to naphthalene fluorophores, shows a concentration dependent decrease in emission intensity upon Fe(III) addition. The sensor was selective for Fe(III) over other metal ions and can measure Fe(III) ion concentration between 0.05 and 0.12 mM. The binding stoichiometry was established as 1:1 (host: guest) with a binding constant (Log beta) of 4.01. Furthermore, the addition of Fe(III) to a solution of caused a colour change from light yellow to colourless meaning is also capable of detecting Fe(III) by the naked eye.
Original languageEnglish
Pages (from-to)795-798
JournalJournal of Fluorescence
Volume22
Issue number3
DOIs
Publication statusPublished - May 2012

Keywords

  • Schiff base
  • Fluorescence
  • Sensor
  • Iron(III)

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    Casanueva Marenco, M. J., Fowley, C., Hyland, B. W., Galindo-Riano, D., Sahoo, S. K., & Callan, J. F. (2012). A New Fluorescent Sensor for the Determination of Iron(III) in Semi-Aqueous Solution. Journal of Fluorescence, 22(3), 795-798. https://doi.org/10.1007/s10895-011-1015-z