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

Casanueva Marenco, Maria Jose, Fowley, Colin, Hyland, Barry W., Galindo-Riano, Dolores, Sahoo, Suban K. and Callan, John F. (2012) A New Fluorescent Sensor for the Determination of Iron(III) in Semi-Aqueous Solution. JOURNAL OF FLUORESCENCE, 22 (3). pp. 795-798. [Journal article]

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DOI: 10.1007/s10895-011-1015-z


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.

Item Type:Journal article
Keywords:Schiff base; Fluorescence; Sensor; Iron(III)
Faculties and Schools:Faculty of Life and Health Sciences > School of Pharmacy and Pharmaceutical Science
Faculty of Life and Health Sciences
Research Institutes and Groups:Biomedical Sciences Research Institute
Biomedical Sciences Research Institute > Pharmaceutical Science and Practice
ID Code:22570
Deposited By: Professor John Callan
Deposited On:11 Jun 2012 13:49
Last Modified:13 May 2014 13:14

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