Synthesis of a facile fluorescent 8-hydroxyquinoline-pillar[5]arene chemosensor based host-guest chemistry for phoxim

Phoxim, is a common pollutant present in the environment and food chains, which exhibits irreversible neurotoxicity and poses a grave threat to food security. Herein, a novel 8-hydroxyquinoline-pillar[5]arene was synthesized and applied in a fluorometric chemosensor to detect phoxim. The fluorometric chemosensor shows great selectivity/sensitivity to phoxim, which is due to the formation of inclusion complex between 8-hydroxyquinoline-pillar[5]arene host and phoxim guest. Besides, the presence of other common pesticides did not disturb the responsivity of this chemosensor. This work provided a reliable and rapid method for detecting the pesticide residue.

Automated summary

A novel 8-hydroxyquinoline-pillar[5]arene was synthesized and applied in a fluorometric chemosensor to detect phoxim with great selectivity and sensitivity. The formation of an inclusion complex between the host and guest molecules contributed to the high performance of this chemosensor, which was not affected by the presence of other common pesticides. This work provides a reliable and rapid method for detecting pesticide residue.