| Retention behavior of phenoxyacetic herbicides on a molecularly imprinted polymer with phenoxyacetic acid as a dummy template molecule. | |
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MedLine Citation:
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PMID: 17614288 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Molecular imprinted polymers (MIPs) binding with phenoxyacetic acid (PA) as a dummy template molecule were synthesized via thermal initiation in aqueous medium. The retention behaviors of benzoic acid (BA), PA, 2-methyl-4-chlorophenoxyacetic acid (MCPA), 4-chlorophenoxyacetic acid (4-CPA), and 2,4-dichlorophenoxyacetic acid (2,4-D) on this MIP column indicate that this material can selectively retain phenoxyacetic herbicides. To investigate these recognition mechanisms, the interactions between the functional monomer 4-vinylpyridine (4-VP) and PA or 2,4-D were investigated by computational modeling. (1)H NMR spectroscopy of 2,4-D titrated by 4-VP was recorded. The chemical shift of the 2,4-D acidic proton (12.15-14.32ppm) shows the existence of the ion-pair interaction. This kind of polymers could be useful as stationary phases to extract 2,4-D, 4-CPA or MCPA and avoid leakage of a trace amount of target analyte remaining in the MIPs. |
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Authors:
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Huiting Zhang; Tao Song; Wei Zhang; Wei Hua; Canping Pan |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2007-06-26 |
Journal Detail:
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Title: Bioorganic & medicinal chemistry Volume: 15 ISSN: 0968-0896 ISO Abbreviation: Bioorg. Med. Chem. Publication Date: 2007 Sep |
Date Detail:
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Created Date: 2007-07-30 Completed Date: 2007-10-24 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9413298 Medline TA: Bioorg Med Chem Country: England |
Other Details:
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Languages: eng Pagination: 6089-95 Citation Subset: IM |
Affiliation:
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Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100094, China. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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2,4-Dichlorophenoxyacetic Acid
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chemistry 2-Methyl-4-chlorophenoxyacetic Acid / chemistry Acetic Acids / chemistry* Benzoic Acid / chemistry Binding Sites Calorimetry Chromatography, High Pressure Liquid Computers, Molecular Herbicides / chemistry* Magnetic Resonance Spectroscopy Models, Chemical Molecular Conformation Molecular Mimicry* Polymers / chemical synthesis, chemistry* Pyridines / chemistry Solvents Stereoisomerism Thermodynamics Water |
| Chemical | |
Reg. No./Substance:
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0/Acetic Acids; 0/Herbicides; 0/Polymers; 0/Pyridines; 0/Solvents; 100-43-6/4-vinylpyridine; 122-59-8/phenoxyacetic acid; 65-85-0/Benzoic Acid; 7732-18-5/Water; 94-74-6/2-Methyl-4-chlorophenoxyacetic Acid; 94-75-7/2,4-Dichlorophenoxyacetic Acid |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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