Abstract
Molecularly imprinted polymers were prepared and tested in different way. 1-methyl-2-piperidinoethylester of 4-decyloxyphenylcarbamic acid was used as template for imprints formation. Acrylamide, 4-vinylpyridine and methacrylic acid as monomers and methanol and acetonitrile as a porogene were used. Non-imprinted polymers (NIP) were prepared for each imprinted polymer by the same procedure. Polymers were employed as sorbents for solid-phase extraction (SPE). In this work the influence of polymerization mixture composition on polymer properties, such as capacity and selectivity, was investigated. The influence of alkoxy-chain length and position on benzene ring on the selectivity of polymers was also investigated.
Highlights
Molecular imprinting is a technique for preparing chemically selective binding sites, which recognize a particular molecule, in a macroporous polymer matrix
Removal of the template molecule from a resultant polymer leaves behind specific recognition sites that are complementary to the template and enable the polymer to selectively rebind the imprint molecule from a mixture of closely related compounds
All molecularly imprinted polymers (MIPs) were prepared by non-covalent approach by bulk polymerization and used as the sorbent for solid-phase extraction
Summary
Molecular imprinting is a technique for preparing chemically selective binding sites, which recognize a particular molecule, in a macroporous polymer matrix. Non-covalent approaches are based on the formation of a prepolymerization complex between monomers and the template trough noncovalent bonds such as ionic interactions or hydrogen bonding. This enables the removal of the template by solvent extraction. The structurally related compounds (analytes with alkoxy-chain with in different position or with different length) were utilized to study the selectivity of MIPs. All MIPs were prepared by non-covalent approach by bulk polymerization and used as the sorbent for solid-phase extraction
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