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Abstract: The interaction process between the phenobarbital (PHN) and acrylamide (AM) was studied using the M062X/6-31G(d,p) method. The PHN and AM were used as the template and functional monomer, respectively. The molecular electrostatic potential (MEP) was simulated for predicting the reactive sites. The atoms in molecules theory helped to reveal the imprinting mechanism and optimize the molar ratios for PHN and AM. The molecular imprinted polymers (MIPs) containing PHN were synthesized through the precipitation polymerization. The diameter range of the obtained MIPs was from 150 to 390 nm. According to the computational results, MIPs with the molar ratio of PHN and AM equal to 1:6 showed high selective adsorption for PHN. The apparent maximum adsorption quantity (Qmax) of MIPs toward PHN was 7.9 mg/g, and the Qmax of nonimprinted polymer microspheres (NIPs) was 3.2 mg/g. Herein, the studies can provide theoretical and experimental references for the controllable fabrication of MIPs.
Template and target information: phenobarbital, PHN
Author keywords: phenobarbital, acrylamide, molecular imprinting polymers, simulation, Preparation