Author(s)

Bo Gao, Yuzhen Zhao, Jiao Liu

Corresponding Author

Bo Gao

Abstract

L-Phenylalanine (L-Phe) imprinted polymers (L-MIPs) were prepared via precipitation polymerization using a novel biocompatible and polymerizable ionic liquid (3-aminopropyl-1-vinylimidazole chloride, [AVIM]Cl) as functional monomer, which could interact with L-Phe through hydrogen-bonding, π-π and electrostatic interactions. The [AVIM]Cl designed had an outstanding contribution to polymerize of the L-MIPs. The L-MIPs prepared under optimized conditions were subsequently used in the adsorption isotherm, adsorption dynamics and the reusable test. The adsorption isotherm revealed that the L-MIPs showed the best imprinted effect at L-Phe concentration of 0.1 mg·mL-1 and their imprinting factor at 3.03. The adsorption dynamic studies revealed that the adsorptive rate of the L-MIPs was much faster than the L-NIPs, and both of them could be equilibrated in 8h. The cyclic regeneration capability of L-MIPs was relatively slightly, after five cycles and the adsorption rate lost only 22%.

Keywords

L-Phenylalanine, Molecularly imprinting, Selectivity ,Ionic liquids