A novel 2-(2-formyl-4-methyl-phenoxy)-N-phenyl-acetamide-based fluorescence turn-on chemosensor for selenium determination with high selectivity and sensitivity

摘要

(Graph Presented) A novel turn-on fluorescent chemosensor, 2-(2-Formyl-4-methyl-phenoxy)-N-phenyl-acetamide (FMPPA) was designed and synthesized, and its photophysical properties were characterized. Upon coordination with Se (IV), the chemosensor showed incredible fluorescence enhancement (turn-on), other alkali, alkaline earth, transitional metal ions, and common anions including Li~+, Na~+, K~+, Rb~+, Cs~+, Be~(2+), Mg~(2+), Ca ~(2+), Sr~(2+), Ba~(2+), Ni~(2+), Cu ~(2+), Cd~(2+), Zn~(2+), Mn~(2+), As ~(3+), Pt~(4+), V~(5+), Fe~(3+), Mo ~(6+), Al~(3+), CO_3 ~(2-), Cl~-, SCN~-, AC~-, NO_3 ~-, F~-, SO_4 ~(2-) had no significant interference on Se (IV) determination. The chemosensor exhibits a dynamic response range for Se (IV) from 3.32 × 10~(-7) to 2.63 × 10~(-6) M, with a detection limit of 9.38 × 10~(-9) M (3σ).