Allyl Fluorescein Molecularly Imprinted Fluorescence Sensor for Rhodamine B
In this paper,using the MOFs material of MIL-96 as the carrier,allyl fluorescein as the fluores-cent group,methacrylic acid as the functional monomer,ethylene glycol dimethacrylate as the crosslinking agent,azobisisobutyronitrile as the initiator,a novel surface molecularly imprinted fluorescence sensor(MIL-96@AF-SMIPs)for the detection of Rhodamine B was prepared by precipitation polymerization.The sensor was characterized by scanning electron microscopy,Fourier transform infrared spectroscopy and X-ray diffrac-tion,which proved the surface molecularly imprinted fluorescence sensor has been successfully synthesized.In the detection of Rhodamine B,the fluorescence intensity ratio I580/I522 showed a good linear relationship with the concentration of Rhodamine B in the range of 0-0.5 μmol/L(R2=0.999).The detection limit was 8.03 nmol/L.In addition,the sensor exhibited high selectivity,good reusability and excellent fluorescence stability.The recovery of Rhodamine B in real sample analysis was 94.23%-109.07%,and the relative stan-dard deviation was less than 3.75%.This study provides a feasible method for efficient and rapid detection of Rhodamine B.
fluoresceinmolecularly imprintiedfluorescence detectionRhodamine B
万方数据
维普
