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A new fluorescent chemosensor for iron(III) based on the beta-aminobisulfonate receptor

Singh, Narinder, Kaur, Navneet, Dunn, John, MacKay, Martha and Callan, John F. (2009) A new fluorescent chemosensor for iron(III) based on the beta-aminobisulfonate receptor. TETRAHEDRON LETTERS, 50 (8). pp. 953-956. [Journal article]

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DOI: 10.1016/j.tetlet.2008.12.041


A simple fluorescent sensor 1 has been developed for the determination of Fe(III) in 100% aqueous solution at pH 7.0. The sensor comprises a novel aminobisulfonate receptor joined to a naphthalene fluorophore via a methylene spacer in the fluorophore-spacer-receptor format of photoinduced electron transfer (PET) based sensors. The fluorescence emission of the sensor was quenched upon addition of Fe(III) ions, most likely due to electron/energy transfer between Fe(III) and the excited naphthalene. The sensor displayed good selectivity for Fe(III) over other physiologically relevant metal ions and can estimate Fe(III) concentration between 16 and 63 mu M. Stern Volmer analysis showed the binding stoichiometry to be 1:1 (host-guest) with a binding constant, calculated using the Benesi-Hilderbrand equation, of (7.6 +/- 0.6) x 10(4) M(-1). (C) 2009 Elsevier Ltd. All rights reserved.

Item Type:Journal article
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 > Pharmacy & Pharmaceutical Sciences
ID Code:19935
Deposited By: Professor John Callan
Deposited On:13 Sep 2011 13:58
Last Modified:19 Nov 2012 15:22

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