一种喹啉类分子对硝基芳香化合物和阴离子的荧光传感研究  

Fluorescence Sensing Investigation of One Quinoline-Based Molecule for Nitroaromatic Compounds and Anions

作　　者：张莉艳 徐志超 魏先文[1] Zhang Liyan;Xu Zhichao;Wei Xianwen(School of Chemistry and Chemical Engineering,Anhui University of Technology,Ma’anshan,243032)

机构地区：[1]安徽工业大学化学与化工学院,马鞍山243032

出　　处：《化学通报》2024年第6期726-731,719,共7页Chemistry

基　　金：国家自然科学基金项目(21771003)资助。

摘　　要：以2-(1H-苯并[d]咪唑基)-8-羟基喹啉和2-氯甲基吡啶盐酸盐为原料合成了一种喹啉类功能分子(BIPQ),相比其他有机溶剂,化合物BIPQ的N,N-二甲基乙酰胺溶液在452nm显示出最强荧光发射。硝基芳香化合物2,4,6-三硝基苯酚(TNP)和阴离子Cr_(2)O_(7)^(2-)对BIPQ的荧光表现出明显的猝灭效应,猝灭常数KSV分别为5.9×10^(3)L/mol和3.8×10^(3)L/mol。BIPQ在荧光检测TNP和Cr_(2)O_(7)^(2-)过程中对其他硝基芳香化合物和阴离子表现出很好的抗干扰能力。此外,本文还研究了化合物BIPQ有效荧光检测TNP和Cr_(2)O_(7)^(2)-的溶液pH范围,并将BIPQ用于实际水样中TNP和Cr_(2)O_(7)^(2)-的荧光检测。One quinoline-based functional molecule(BIPQ)was synthesized by using 2-(1H-benzo[d]imidazol-1-yl)-8-hydroxyquinoline and 2-chloromethylpyridine hydrochloride as raw materials.Compared to other organic solvents,the N,N-dimethylacetamide solution of compound BIPQ showed the strongest fluorescence emission intensity at 452nm.The fluorescence sensing performance of compound BIPQ for nitroaromatic compounds and anions revealed that nitroaromatic compound 2,4,6-trinitrophenol(TNP)and anion Cr_(2)O_(7)^(2)-showed significant quenching effects on the fluorescence intensity of BIPQ,with quenching constants(KSV)of 5.9×10^(3)L·mol^(-1)and 3.8×10^(3)L·mol^(-1),respectively.The anti-interference experiments results showed that BIPQ displayed high selectivity toward TNP and Cr_(2)O_(7)^(2-)over other competing nitroaromatic compounds and anions,respectively.In addition,the pH range for the effective fluorescence detection of TNP and Cr_(2)O_(7)^(2-)in BIPQ solution was investigated,and BIPQ was also applied to the fluorescence detection of TNP and Cr_(2)O_(7)^(2-i)n actual water samples.

关 键 词：喹啉类分子 三硝基苯酚 Cr2O72-离子 荧光传感 

分 类 号：X832[环境科学与工程—环境工程] O657.3[理学—分析化学]