A novel fluorescent sensor for Pd2+detection in aqueous media
A novel tetraphenylethylene derivative(TPE-H)was designed and synthesized,which exhibited bright red aggregation induced emission(AIE)characteristics in THF/H2O(0.5/9.5,volume ratio)solution medium.TPE-H selectively identified Pd2+through a fluorescence"on-off"strategy.This sensor had excellent selectivity and sensitivity,and exhibited excellent stability over a wide pH range(4-10).Detailed research on Pd2+detection showed that the detection limit for Pd2+was 9.81×10-8mol/L.The sensing mechanism was confirmed through 1H NMR,Fourier transform infrared spectroscopy spectroscopy and mass spectroscopy.In the sensing test paper and real water sample testing,TPE-H had good sensing effect on Pd2+with small errors.This study not only reported an effective Pd2+fluorescence sensor,but also proposed good application prospects for in-situ and real-time sensing of Pd2+in complex environments.
万方数据
