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Selective signalling of glyphosate in water using europium luminescence.

Jennings, Laura B. and Shuvaev, Sergey and Fox, Mark A. and Pal, Robert and Parker, David (2018) 'Selective signalling of glyphosate in water using europium luminescence.', Dalton transactions., 47 (45). pp. 16145-16154.


A series of four emissive europium complexes has been evaluated for the binding of glyphosate in various aqueous media, including river water and grain extracts. Binding selectivity toward inorganic phosphate and bicarbonate was enhanced by measuring samples at pH 5.9, above the pKa of glyphosate itself. The highest affinity was shown with [Eu·L1], which creates an exocyclic tripicolylamine moiety when one pyridine group dissociates from Eu. Glyphosate was bound selectively over dihydrogenphosphate, glycinate, aminomethylphosphonate and the related herbicide glufosinate. The complex was used to measure glyphosate over the range 5 to 50 μM, in river water and grain extracts.

Item Type:Article
Full text:(AM) Accepted Manuscript
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Date accepted:23 October 2018
Date deposited:06 December 2018
Date of first online publication:26 October 2018
Date first made open access:23 October 2019

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