A novel thiazole-based luminescent porous organic polymer as recyclable and selective turn-off fluorescent sensor for ultrasensitive detection of Pd^(2+)

摘要

1.Introduction Due to the potential harm of even low doses of Pd^(2+),to develop efficient approaches towards selective recognition of trace Pd^(2+)in environment is of great significance[1].Up to now,a wide variety of analytical methods and instruments for detecting palladium ions have been developed,including atomic absorption spectrometry(AAS),inductively coupled plasma atomic emission spectroscopy(ICP-AES),total reflection X-ray fluorescence(TXRF),HPLC,capillary zone elec-trophoresis(CZE),colorimetric sensing,and inductively coupled plasma mass spectrometry(ICP-MS).Most of these methods suffer from various drawbacks like complicated sample pretreatment processes,expensive apparatus and high detection costs[2,3].