A model system using modulation of lanthanide luminescence to signal Zn 2+ in competitive aqueous media

O Reany, T Gunnlaugsson, D Parker

Index: Reany, Ofer; Gunnlaugsson, Thorfinnur; Parker, David Journal of the Chemical Society. Perkin Transactions 2, 2000 , # 9 p. 1819 - 1831

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Citation Number: 91

Abstract

Two pentadentate tribasic ligand systems containing aniline or benzylamine nitrogens covalently linked to a proximate kinetically stable Eu or Tb complex are described. The affinity of these complexes and their non-conjugated analogues for Zn 2+, Ca 2+ and Mg 2+ ions has been measured at ambient pH in a high salt background. Apparent binding constants for the parent ligands (L 1: Zn 2+ log β ML 5.04, Ca 2+ 3.91, Mg 2+ 2.1, L 3: Zn 2 ...

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