分析测试学报2024，Vol.43Issue(4)：614-621,8.DOI:10.12452/j.fxcsxb.23102301
基于香豆素和寡聚芳酰胺的Hg2+荧光探针性能及应用研究
Study on the Properties and Application of Hg2+ Fluorescent Probe Based on Coumarin and Oligaramide
摘要
Abstract
A fluorescent probe with a certain rigid skeleton was prepared by amidation of oligaramide trimer diacid with intra-molecular three center hydrogen bond and 3-aminocoumarin.The structure of the probe was characterized by nuclear magnetic resonance(NMR)and mass spectrum(MS).The se-lective recognition,anti-interference and reversible properties of the probe were studied by fluores-cence emission spectra.The coordination ratio and detection limit of the probe and Hg2+ were deter-mined,and the ability of the probe to quantitatively detect Hg2+ in different water samples was also studied.The results showed that the probe molecule showed excellent selectivity to Hg2+ in mixed so-lution,and was not interfered by other metal ions(K+,Na+,Ca2+,Mg2+,Cu2+,Zn2+,Pb2+,Cd2+,Fe3+,Mn2+,Ni2+,Ag+,Cr3+,Al3+,Co2+).The probe has good reversibility for Hg2+.Their coordi-nation ratio is 1∶1,and the detection limit is 2.08×10-7 mol/L,which met the requirements of actu-al water sample detection,and the detetion results are similar to those of atomic fluorescence meth-od.The luminescence mechanism of Hg2+ recognition by the probe molecule was also deduced by the means of infrared spectrum(IR)and hydrogen nuclear magentic resonance(1 H NMR).The probe can be used for the quantitative detection of Hg2+ in different water samples with high accuracy and preci-sion.关键词
香豆素/寡聚芳酰胺/汞离子/荧光探针/水样Key words
coumarin/oligaramide/mercury ion/fluorescent probe/water sample分类
化学化工引用本文复制引用
杨永安,王媛,陈明,谢一柳,王英伍,许肖云..基于香豆素和寡聚芳酰胺的Hg2+荧光探针性能及应用研究[J].分析测试学报,2024,43(4):614-621,8.基金项目
西华师范大学博士科研启动基金(21E032,21E033) （21E032,21E033）
西华师范大学国家级课题培育基金(22kA009) （22kA009）
