Luminescence recognition of different organophosphorus pesticides by the luminescent Eu(III)–pyridine-2,6-dicarboxylic acid probe

Sensing of nucleosides, nucleotides and DNA using luminescent Eu complex by normal and time resolved fluorescence techniques

“…In addition, problems associated with autofluorescence and Rayleigh scattering are obviated [33]. The present study can be considered as a continuation for the author work in the field of analytical applications of lanthanide complexes [35][36][37][38][39][40][41].…”

Fluorescence sensing of dichlorvos pesticide by the luminescent Tb(III)‐3‐ally‐salicylohydrazide probe

“…From the thermodynamic standpoint, where ΔH > 0 and ΔS > 0 reflects a hydrophobic interaction; ΔH < 0 and ΔS < 0 reflects the van der Waals force or hydrogen bond formation and ΔH < 0 and ΔS > 0 suggests an electrostatic force . The binding constant K b was deduced utilizing the Benesi − Hildebrand equation, then using the van ‘t Hoff equation (equation ): …”

Time-resolved fluorescence sensing of pesticides chlorpyrifos, crotoxyphos and endosulfan by the luminescent Eu(III)–8-allyl-3-carboxycoumarin probe

“…Due to the structural similarity of pesticide compounds, it is also paramount that the designed sensors must be fabricated such that they are highly selective toward specific pesticide compounds. This work represents a continuation of our work in the field of development of novel luminescent sensors for environmental and biomedical applications [23][24][25][26][27][28][29].…”

“…Solution of Eu(III)-(ACC) 2 and various samples of pesticides under study (between 500 and 50 µmol/L) were prepared, and pipetted into a microtiterplate (150 µL into each well). Luminescence intensities were acquired on the microtiterplate reader using different lag times (15,25,35 and 50 µs) while keeping the integration time constant (100 µs) and Gain factor 1500. It was found that a lag time of 50 µs is sufficient to obtain optimal sensitivity for the present assay.…”