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pubmed-article:17614288pubmed:abstractTextMolecular 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.lld:pubmed
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pubmed-article:17614288pubmed:authorpubmed-author:RoeE JEJJrlld:pubmed
pubmed-article:17614288pubmed:authorpubmed-author:SorkV LVLlld:pubmed
pubmed-article:17614288pubmed:authorpubmed-author:ZhangWeiWlld:pubmed
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pubmed-article:17614288pubmed:year2007lld:pubmed
pubmed-article:17614288pubmed:articleTitleRetention behavior of phenoxyacetic herbicides on a molecularly imprinted polymer with phenoxyacetic acid as a dummy template molecule.lld:pubmed
pubmed-article:17614288pubmed:affiliationDepartment of Applied Chemistry, College of Science, China Agricultural University, Beijing 100094, China.lld:pubmed
pubmed-article:17614288pubmed:publicationTypeJournal Articlelld:pubmed
pubmed-article:17614288pubmed:publicationTypeResearch Support, Non-U.S. Gov'tlld:pubmed