Journal of Fluorescence

, Volume 22, Issue 3, pp 795–798

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

  • María José Casanueva Marenco
  • Colin Fowley
  • Barry W. Hyland
  • Dolores Galindo-Riaño
  • Suban K. Sahoo
  • John F. Callan
Short Communication

DOI: 10.1007/s10895-011-1015-z

Cite this article as:
Marenco, M.J.C., Fowley, C., Hyland, B.W. et al. J Fluoresc (2012) 22: 795. doi:10.1007/s10895-011-1015-z

Abstract

A simple fluorescent sensor 1 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 (Logβ) of 4.01. Furthermore, the addition of Fe(III) to a solution of 1 caused a colour change from light yellow to colourless meaning 1 is also capable of detecting Fe(III) by the naked eye.

Keywords

Schiff base Fluorescence Sensor Iron(III) 

Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • María José Casanueva Marenco
    • 2
  • Colin Fowley
    • 1
  • Barry W. Hyland
    • 1
  • Dolores Galindo-Riaño
    • 2
  • Suban K. Sahoo
    • 3
  • John F. Callan
    • 1
  1. 1.Department of Pharmacy and Pharmaceutical Sciences, School of Biomedical SciencesThe University of UlsterColeraineNorthern Ireland
  2. 2.Department of Analytical Chemistry, Faculty of SciencesUniversity of CadizPuerto RealSpain
  3. 3.Department of Applied ChemistrySardar Vallabhbhai National Institute Technology (SVNIT)SuratIndia

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