期刊
CARBOHYDRATE POLYMERS
卷 79, 期 3, 页码 642-647出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2009.09.010
关键词
Molecular imprinting; Acifluorfen; beta-Cyclodextrin; Molecular recognition
资金
- Hengyang Science and Technology Bureau [2008KS035]
An acifluorfen-imprinted polymer (Pi) was prepared by the combined use of bismethacryloyl-beta-cyclodextrin (BMA-P-CD) and 4-vinylpyridine (4-VP) as functional monomers. Compared with the molecularly imprinted polymers (MIPs) using only BMA-beta-CD or 4-VP as a functional monomer, P-2 and P-3, respectively, P-1 showed higher binding capacity (C-p) and imprinting factor (IF) for acifluorfen in aqueous media. Scatchard plot analysis revealed that two classes of binding sites were formed in the imprinted polymer P-1 with dissociation constants of 0.435 and 0.868 mu mol/ml, respectively. The results of competitive binding experiments showed that P-1 can separate acifluorfen from its structural analogs. The study indicated that the combination of hydrophobic effect and electrostatic interaction in imprinting process is a feasible approach for achieving molecular recognition in aqueous media. (C) 2009 Elsevier Ltd. All rights reserved.
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