Preparation and characterization of an imprinted monolith by atom transfer radical polymerization assisted by crowding agents
- 550 Downloads
A method based on reverse atom transfer radical polymerization (R-ATRP) and molecular crowding has been used for design and synthesis of monolithic molecularly imprinted polymers (MIPs) capable of recognizing ibuprofen (IBU). 4-Vinylpyridine (4-VP) was used as the functional monomer, and ethylene glycol dimethacrylate (EDMA) was the crosslinking monomer. Azobisisobutyronitrile (AIBN)–CuCl2–N,N,N′,N″,N″-pentamethyldiethylenetriamine (PMDETA) was used as the initiating system. Compared with conventional radical polymerization-based IBU-MIPs, the imprinting effects of the obtained IBU-MIPs was enhanced, suggesting the merit of combination of reverse ATRP and molecular crowding. In addition, it was found that the polymerization time of the molecularly imprinted monolithic column, the amount of template, the degree of crosslinking, and the composition of mobile phase greatly affected retention of the template and the performance of molecular recognition
KeywordsAtom transfer radical polymerization Ibuprofen Molecularly imprinted polymer Molecular crowding Molecular recognition Monolith
This work was supported by the National Natural Science Foundation of China (grant no. 21075090) and supported by the Hundred Talents Program of the Chinese Academy of Sciences.
- 39.Hung CY, Huang YT, Huang HH, Hwang CC (2006) J Chin Chem Soc 53:1173–1180Google Scholar