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Journal Articles Dalton Transactions Year : 2019

Phosphate and polyphosphate anions recognition by a dinuclear copper(II) complex of an unsymmetrical squaramide

Abstract

In the search for receptors suitable for the recognition of phosphate or polyphosphate anions a new unsymmetrical squaramide-based ligand bearing dipicolylamine (dpa) and ethylpiperazine units (L) was designed and prepared. The acid-base reactions of L, its copper(II) complexation behaviour as well as the binding of phosphate and polyphosphate anions by the copper(II) complexes used as receptors were evaluated. At pH=7.4, ATP4– is selectively removed from water containing PhPO42−, Haep−, AMP2– and ADP3− by the dicopper(II) complex of the squaramide ligand.
Dans notre recherche de récepteurs appropriés pour la reconnaissance des anions phosphate ou polyphosphate, nous avons conçu un nouveau ligand non symétrique à base de squaramide portant des unités dipicolylamine (dpa) et éthylpipérazine (L). Les réactions acide-base de L, son comportement à la complexation du cuivre (II) ainsi que la liaison des anions phosphate et polyphosphate par les complexes de cuivre (II) utilisés comme récepteurs ont été évalués. À pH = 7,4, l'ATP4– est éliminé sélectivement de l'eau contenant PhPO42−, Haep-, AMP2– et ADP3− par le complexe dicuivre (II) du ligand squaramide.

Dates and versions

hal-02145467 , version 1 (03-06-2019)

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Catarina Esteves, Judite Costa, David Esteban, Pedro Lamosa, Hélène Bernard, et al.. Phosphate and polyphosphate anions recognition by a dinuclear copper(II) complex of an unsymmetrical squaramide. Dalton Transactions, 2019, ⟨10.1039/C9DT01434A⟩. ⟨hal-02145467⟩
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