Chem. J. Chinese Universities ›› 2021, Vol. 42 ›› Issue (8): 2422.doi: 10.7503/cjcu20210027

• Analytical Chemistry • Previous Articles     Next Articles

A Coumarin-based Ratiometric Fluorescent Probe for BF3 Detection in Solution and Air

ZHAO Huijun, WU Tong, SUN Yue, DUAN Lian(), MA Yanyu   

  1. School of Chemistry and Chemical Engineering,Taiyuan University of Technology,Taiyuan 030024,China
  • Received:2021-01-13 Online:2021-08-10 Published:2021-08-05
  • Contact: DUAN Lian E-mail:duanlian@tyut.edu.cn

Abstract:

A selective and sensitive coumarin-based ratio fluorescent probe 3-p-methylbenzene-7-diethylamino coumarin(TDC) was developed for BF3 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 BF3 greatly influenced the intramolecular charge transfer(ICT) process. To meet the practical application, a simple test strip system was developed to detect BF3 in gas phase rapidly with obvious color changes.

Key words: Boron trifluoride, Coumarin derivative, Ratiometric fluorescent detection, Strip test

CLC Number: 

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