Abstract: Polyethyleneimine (PEI) was grafted onto the surface of silica gel particles via the coupling effect of 3-methacryloxypropyl trimethoxysilane (MPS), and the grafted particle PEI/SiO2 was prepared. Then, the molecular imprint polyethyleneimine on the surface of silica gel, MIP-PEI/SiO2, was prepared with bilirubin as a template molecule and ethylene glycol diglycidyl ether (EGDE) as crosslinking agent by using novel molecular surface imprinting technique. Both static and dynamic methods were adopted to study the identification properties of MIP-PEI/SiO2 for bilirubin. The experimental results show that MIP-PEI/SiO2 has higher selectivity ability and excellent combination property for bilirubin. Besides, MIP-PEI/SiO2 has excellent elution property, with the mixed solvent of EDTA and NaOH as the eluent, the desorption ratios of bilirubin reach 99.39% in 11 bed volumes
Template and target information: bilirubin
Author keywords: Bilirubin, molecular imprint, polyethyleneimine, silica gel, surface imprint