Copper ion-mediated glyphosate detection with N-heterocycle based polyacetylene as a sensing platform

A pyrene-based ratiometric probe for nanomolar level detection of glyphosate in food and environmental samples and its application for live-cell imaging

“…This indicates the formation of a ground state non-fluorescent complex between 1 and Cu 2+ ions. 23 From the above shreds of evidences, we can conclude that dissociation of the preformed metal complex ( 1 ·Cu 2+ ) occurred in the presence of glyphosate, which triggers the release of the free probe ( 1 ) in the reaction medium.…”

Effect of glyphosate on X-ray diffraction of copper films prepared by electrochemical deposition

“…The binding energy of 932.3 eV represented the Cu 2+ ions that coordinated with glyphosate adsorbed on the surface of ITO because P]O bond in the glyphosate structure had strong affinity towards the Cu 2+ ions. 34 The d 9 electronic conguration of Cu 2+ , in which one electron could be easily excited to the 4p orbital to form a dsp 2 hybrid orbital, facilitated the formation of the complex between ligands by accepting lone pair of electrons. The reduction of binding energy from 935.0 eV to 932.3 eV indicated that there was an electron density change for Cu 2+ ions during complexation.…”

“…We chose copper as the depositing metal as it was reported that glyphosate had a strong interaction with Cu 2+ ions. 34 Compared to the precious metals like platinum, gold and their alloys, the transition metal copper is inexpensive and cannot be easily oxidized. Copper can be electrochemically deposited directly at a constant potential.…”

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

“…8 Glyphosate can irreversibly inactivate acetylcholinesterase (AChE) to cause different adverse physiological reactions, which might cause respiratory, myocardial, and neuromuscular dysfunctions. 6,9–11 Furthermore, recent studies have indicated that glyphosate is potentially carcinogenic to humans 12 although there are conflicting opinions on its carcinogenicity between the US Environmental Protection Agency (EPA) and the International Agency for Research on Cancer (IARC). 13 The EPA has set the maximum contaminant level (MCL) of glyphosate in drinking water to 4.1 μM.…”