Herein we describe the binding abilities of Zn(II) complexes of [12]aneN4- (L1) and [9]aneN3-based receptors (L2, L3) towards the herbicides N-(phosphonomethyl)glycine (glyphosate, H3PMG) and 2-amino-4-[hydroxy(methyl)phosphoryl]butanoic acid (glufosinate, H2GLU), and also aminomethylphosphonic acid (H2AMPA), the main metabolite of H3PMG, and phosphate. All ligands form stable Zn(II) complexes, whose coordination geometries allow a possible interaction of the metal center with exogenous anionic substrates. Potentiometric studies evidenced the marked coordination ability of the L2/Zn(II) system for the analytes considered, with a preferential binding affinity for H3PMG over the other substrates, in a wide range of pH values. 1H and 31P NMR experiments supported the effective coordination of such substrates by the Zn(II) complex of L2, while fluorescence titrations and a test strip experiment were performed to evaluate whether the H3PMG recognition processes could be detected by fluorescence signaling. https://pubs.rsc.org/en/content/articlelanding/2022/dt/d2dt00738j

Glyphosate sensing in aqueous solutions by fluorescent zinc(II) complexes of [9]aneN3-based receptors / Garau, Alessandra; Picci, Giacomo; Bencini, Andrea; Caltagirone, Claudia; Conti, Luca; Lippolis, Vito; Paoli, Paola; Romano, Giammarco Maria; Rossi, Patrizia; Scorciapino, Mariano Andrea. - In: DALTON TRANSACTIONS. - ISSN 1477-9234. - STAMPA. - 51:(2022), pp. 8733-8742. [10.1039/d2dt00738j]

Glyphosate sensing in aqueous solutions by fluorescent zinc(II) complexes of [9]aneN3-based receptors

Bencini, Andrea
;
Conti, Luca;Lippolis, Vito;Paoli, Paola;Romano, Giammarco Maria;Rossi, Patrizia;
2022

Abstract

Herein we describe the binding abilities of Zn(II) complexes of [12]aneN4- (L1) and [9]aneN3-based receptors (L2, L3) towards the herbicides N-(phosphonomethyl)glycine (glyphosate, H3PMG) and 2-amino-4-[hydroxy(methyl)phosphoryl]butanoic acid (glufosinate, H2GLU), and also aminomethylphosphonic acid (H2AMPA), the main metabolite of H3PMG, and phosphate. All ligands form stable Zn(II) complexes, whose coordination geometries allow a possible interaction of the metal center with exogenous anionic substrates. Potentiometric studies evidenced the marked coordination ability of the L2/Zn(II) system for the analytes considered, with a preferential binding affinity for H3PMG over the other substrates, in a wide range of pH values. 1H and 31P NMR experiments supported the effective coordination of such substrates by the Zn(II) complex of L2, while fluorescence titrations and a test strip experiment were performed to evaluate whether the H3PMG recognition processes could be detected by fluorescence signaling. https://pubs.rsc.org/en/content/articlelanding/2022/dt/d2dt00738j
51
8733
8742
Garau, Alessandra; Picci, Giacomo; Bencini, Andrea; Caltagirone, Claudia; Conti, Luca; Lippolis, Vito; Paoli, Paola; Romano, Giammarco Maria; Rossi, Patrizia; Scorciapino, Mariano Andrea
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2158/1277442
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