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Reference type: Journal
Authors: Qi PP, Wang JC, Wang LD, Li Y, Jin J, Su F, Tian YZ, Chen JP
Article Title: Molecularly imprinted polymers synthesized via semi-covalent imprinting with sacrificial spacer for imprinting phenols.
Publication date: 2010
Journal: Polymer
Volume: 51
Issue: (23)
Page numbers: 5417-5423.
DOI: 10.1016/j.polymer.2010.09.037
Alternative URL: http://www.sciencedirect.com/science/article/B6TXW-512VTKM-2/2/660b723d8b24d9284311999c00e4e3f0

Abstract: Semi-covalent imprinting with carbonyl group as sacrificial spacer was employed to synthesize molecularly imprinted polymer (MIP) for phenols. A series of semi-covalently imprinted polymers were prepared by varying the templates and porogens. The MIP with 4-chlorophenyl (4-vinyl)phenyl carbonate as template was proved to be the best one, with ethylene glycol dimethacrylate (EGDMA) as cross-linker, 2,2-azobisisobutyronitrile(AIBN), and chloroform as initiator and porogen, respectively. Under such conditions, the corresponding non-covalently imprinted polymer was fabricated with 4-chlorophenol (4-CP) as template and 4-vinylpyridine (4-VP) as functional monomer. The polymer prepared by semi-covalent imprinting displayed superior selectivity to the non-covalently imprinted polymer for phenols. The peak broadening and tailing had been largely reduced on the column packed with semi-covalently imprinted polymer. Meanwhile, the constant retention for these phenols and the good linearity for phenol and 4-CP augured that the semi-covalently imprinted polymer had the potential application as stationary phase for quantitative determination of phenols
Template and target information: 4-chlorophenyl (4-vinyl)phenyl carbonate, 4-chlorophenol, 4-CP
Author keywords: Semi-covalent imprinting, sacrificial spacer, stationary phases, molecularly imprinted polymer


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