基于香豆素的比率型荧光探针对溶液及气相中三氟化硼的检测  

A Coumarin-based Ratiometric Fluorescent Probe for BF_(3) Detection in Solution and Air

作　　者：赵慧君[1] 吴通 孙玥[1] 段炼[1] 马嫣宇 ZHAO Huijun;WU Tong;SUN Yue;DUAN Lian;MA Yanyu(School of Chemistry and Chemical Engineering,Taiyuan University of Technology,Taiyuan 030024,China)

机构地区：[1]太原理工大学化学化工学院,太原030024

出　　处：《高等学校化学学报》2021年第8期2422-2427,共6页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:21301126);山西省青年科技研究基金(批准号:2013021009-3,201701D221038);山西省高校创新项目(批准号:2017128)资助~~。

摘　　要：合成了一种以香豆素为主体的具有高选择性及灵敏性的比率型荧光探针3-对甲基苯基-7-二乙氨基香豆素(TDC),并将其用于溶液及气相中三氟化硼(BF_(3))的即时可视化检测,检出限为5.5×10^(-7)mol/L.通过荧光光谱、紫外-可见吸收光谱和核磁共振波谱(~(19)F NMR)等方法证实,该探针与BF_(3)之间发生的路易斯酸碱反应会对TDC分子内电荷转移(ICT)过程产生影响,从而引起光谱和溶液颜色的明显变化.基于TDC分子制成的试纸能够实现裸眼检测溶液和气相中的BF_(3).A selective and sensitive coumarin-based ratio fluorescent probe 3-p-methylbenzene-7-diethylamino coumarin(TDC)was developed for BF_(3) detection in dichloromethane and gas phase.The detection limit of BF3 was estimated to be 5.5×10^(-7) mol/L.The probe TDC showed a remarkable ratio fluorescence change in the presence of BF3 with a fast respond time.19F NMR result demonstrated that the Lewis acid-base complexes formed between the diethylamino substituents in the probe and BF_(3) greatly influenced the intramolecular charge transfer(ICT)process.To meet the practical application,a simple test strip system was developed to detect BF_(3) in gas phase rapidly with obvious color changes.

关 键 词：三氟化硼 香豆素衍生物 比率荧光检测 试纸检测 

分 类 号：O657[理学—分析化学]