5,10,15,20-Tetrakis(Pentafluorophenyl)Porphine(TPPP)Aggregate for the Fluorescence-Enhanced Detection of Fe3+
TPPP aggregates were constructed by reprecipitation method at room temperature using tetrahy-drofuran as a good solvent to dissolve 5,10,15,20-tetrakis(pentafluorophenyl)porphine(TPPP)and water as a bad solvent to induce the assembly,and their morphological structure and luminescent proper-ties were characterized.It is found that the fluorescence of the aggregate is significantly enhanced in the presence of Fe3+,so the aggregate can be used as a fluorescent probe to detect Fe3+ions.Through detec-tion,it is determined that there is a linear relationship between the fluorescence intensity of the probe and the concentration of Fe3+in the range of 5.0×10-8 to 5.18×10-6 mol/L with R2=0.993 56 and the detection limit is calculated to be 2.97×10-8 mol/L.In addition,TPPP aggregate fluorescent probe has good selectivity and anti-interference in the detection of Fe3+.Finally,it is verified that it has good feasi-bility in the spiking experiments of pure water,tap water,and mineral water,the recovery rate of spiking is between 95.02%and 104.73%.