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Abstract: MIPMs based on the 5 - (4 - methyl acryloyl oxygen phenyl) - 10,15,20 - triphenyl zinc porphyrin (ZnMOTPP) and 5 - (4 - methyl acryloyl oxygen phenyl) - 10,15,20 - triphenyl gadolinium porphyrin (GdMOTPP) were prepared when DMMP was as the template while MAA as auxiliary function monomer, including MIPMs-Zn+MAA, MIPMs-Gd+MAA and MIPMs-MAA. MIPMs were characterized by scanning electron microscopy (SEM). The SEM datas showed that the average particle size were between 50-100μm and particle size is uniform. Comparative study of adsorption and specificity showed that the adsorption capacity of MIPMs-Zn+MAA is superior to MIPMs-Gd+MAA. The adsorption capacity of MIPMs-Zn+MAA, MIPMs-Gd+MAA were much greater than MIPMs-MAA. MIPMs also showed better selectivity for DMMP through the isotherm binding test of two different substrates which were diomethoate and phorate. By Scatchard analysis, the data of equilibrium adsorption experiment displayed that the MIPMs-DMMP only had one affinity binding site. The maximum absorption quantities of MIPMs-Zn+MAA, MIPMs-Gd+MAA, MIPMs-MAA were 148 μmol/g, 78.9 μmol/g and 13.57μmol/g respectively.
Template and target information: dimethyl methylphosphonate, DMMP
Author keywords: molecularly imprinted microspheres (MIMs), metalloporphyrins, molecular imprinting, DMMP