B.K. McMahon
Selective ion pair recognition of citrate and zinc ions in water by ratiometric luminescence signaling
McMahon, B.K.; Parker, D.
Abstract
Emission from a bright europium(III) complex, based on a 1,4,7-triazacyclononane ring bearing an alkyliminodiacetate group, is modulated only when in the presence of zinc(II) ions and a carboxylate anion and was characterised by ratiometric luminescence analysis at pH 7.4. No change in emission spectral form was observed when either the metal ion or oxy-anion was added separately. Amongst the diamagnetic systems examined, the strongest binding was observed for zinc and citrate (log K = 3.9, pH 7.4) and anion selectivity was observed in the order citrate > lactate/acetate/bicarbonate. No changes in the Eu spectral characteristics were found in the presence of added Ca2+ or Mg2+ ions, consistent with the much lower affinity of these cations for the iminodiacetate binding site.
Citation
McMahon, B., & Parker, D. (2014). Selective ion pair recognition of citrate and zinc ions in water by ratiometric luminescence signaling. RSC Advances, 4(71), 37649-37654. https://doi.org/10.1039/c4ra07894b
Journal Article Type | Article |
---|---|
Publication Date | Aug 11, 2014 |
Deposit Date | Nov 14, 2014 |
Publicly Available Date | Nov 20, 2014 |
Journal | RSC Advances |
Electronic ISSN | 2046-2069 |
Publisher | Royal Society of Chemistry |
Peer Reviewed | Peer Reviewed |
Volume | 4 |
Issue | 71 |
Pages | 37649-37654 |
DOI | https://doi.org/10.1039/c4ra07894b |
Public URL | https://durham-repository.worktribe.com/output/1442083 |
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