A fluorescent probe for the detection of Al (III) based on a novel unsymmetrical trisubstituted 1,3,5-triazine

Abstract

A highly selective and sensitive assay for Al (III) has been reported. A series of unsymmetrical trisubstituted 1,3,5-triazine compounds were synthesized using a one-pot method, in which probe 8-((4,6-diphenyl-1,3,5-triazin-2-yl)oxy)quinoline (2a) utilized for the detection of aluminum ions. The fluorescence characteristics of the 2a probe were then thoroughly studied, including its selectivity towards various metal ions, solvent effects, ion interference testing, response time, maximum detection limit, Job’s curve analysis, and research on the reversibility of EDTA. The linearity of the fluorescence concentration titration was found to be good within the range of 100–300 μM with R2 = 0.981 for Al3+. The minimum detection limit was determined to be 0.29 μM and the response time was only 10 s. These results indicate that probe 2a exhibits a specific response to Al3+ and holds great potential for application in aluminum ion detection.