The polymers based on ethylene glycol dimethacrylate (EGDMA) and dimethylaminoethyl methacrylate (DMAEMA) and molecularly imprinted with uric acid (UA), UA-MIPs, were successfully synthesized. The binding activity of UA-MIPs towards UA was studied in depth using batch methods. The optimized sorbent UA-MIP-7-16 was synthesized; this is an EGDMAcrosslinked system containing 16 mol% of UA as the template. The character of binding between UA and UA-MIP-7-16 was studied using xanthine as a reference substance, since its chemical structure is similar to that of UA. The studies of equilibrium sorption of UA and xanthine from model aqueous solutions by the imprinted sorbent demonstrate the predominance of specific UA sorption. The sorption kinetic data were analyzed using the Boyd model and shell and core. Selectivity of UAMIP- 7-16 was further demonstrated by biochemical analysis of serum containing UA and other components conducted before and after sorption. UA-MIP-7-16 showed high recognition selectivity and affinity towards the template molecule (UA).
Financed by the National Centre for Research and Development under grant No. SP/I/1/77065/10 by the strategic scientific research and experimental development program:
SYNAT - “Interdisciplinary System for Interactive Scientific and Scientific-Technical Information”.