Dual-mode detection of fluorine-containing pesticides (bifenthrin, flufenoxuron, diflubenzuron) via ratiometric fluorescence and the Tyndall Effect of fluorescent organic nanoparticles

Exploring Various Photochemical Processes in Optical Sensing of Pesticides by Luminescent Nanomaterials: A Concise Discussion on Challenges and Recent Advancements

“…79 Recently, a fluorescent organic nanoparticle (FON) sensor was synthesized for the recognition of fluoride-containing pesticides, bifenthrin, flufenoxuron, and diflubenzuron (Figure 15), exploring the ratiometric fluorescence assay (FLA) and Tyndall effect assay (TEA). 80 In the presence of these three pesticides, the characteristic fluorescence intensity ratios (590 nm/350 nm) were sharply enhanced, unlike other pesticides and metal ions. The presence of fluoride-containing pesticides induced the aggregation of the FON accompanied by changes in luminescent behaviors.…”

“…The probe was extremely sensitive to the pesticides (9.34 μg/kg for bifenthrin, 6.91 μg/kg for flufenoxuron, and 3.60 μg/kg for diflubenzuron) with impressive recovery capability. 80 To date, AIE nanoparticles have been considered very effective in biomedical applications but are vulnerable as a luminescent sensor due to incompetency in stability, biotoxicity, and a modifiable functional group. 81 In 2019, Chen et al developed an amphiphilic polymer (PTD) via radical copolymerization of N-(1,2,2-triphenylmethyl)-4-acetylaniline and dimethyldiallyl ammonium chloride and employed the selfassembling nanoscale organic polymer assembled with AuNPs in the fluorescent detection of OP pesticides via the dispersion of the polymer in PBS buffer.…”

“…The presence of fluoride-containing pesticides induced the aggregation of the FON accompanied by changes in luminescent behaviors. The probe was extremely sensitive to the pesticides (9.34 μg/kg for bifenthrin, 6.91 μg/kg for flufenoxuron, and 3.60 μg/kg for diflubenzuron) with impressive recovery capability …”

“…The probe was extremely sensitive to the pesticides (9.34 μg/kg for bifenthrin, 6.91 μg/kg for flufenoxuron, and 3.60 μg/kg for diflubenzuron) with impressive recovery capability. 80 …”

“… Schematic diagram of synthetic process of FON–Trp conjugate and basic recognition mechanism of fluorine-containing pesticides (Reprinted with permission from ref ( 80 ). Copyright 2023 Elsevier).…”