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Reference type: Journal
Authors: Cheng ZY, Zhang LW, Li YZ
Article Title: Synthesis of an enzyme-like imprinted polymer with the substrate as the template, and its catalytic properties under aqueous conditions.
Publication date: 2004
Journal: Chemistry - A European Journal
Volume: 10
Issue: (14)
Page numbers: 3555-3561.
DOI: 10.1002/chem.200305370
Alternative URL: http://www.qmc.ufsc.br/~jbdomingos/artigos/Molecular_imprinting_polymers/Li_Synthesis%20of%20an%20Enzyme-like%20Imprinted%20Polymer%20with%20the%20Substrate_Eur_J_Chemistry.pdf

Abstract: Transition state analogues (TSAs) have long been regarded as ideal templates for the preparation of catalytically active synthetic imprinted polymers. In the current work, however, a new type of molecularly imprinted polymer (MIP) was synthesized with the substrate (homovanillic acid, HVA) as the template and hemin introduced as the catalytic center, with the use of plural functional monomers to prepare the active sites. The MIP successfully mimicked natural peroxidase, suggesting that it may not be imperative to employ a TSA as the template when preparing enzyme-like imprinted polymers and that the imprinted polymer matrix provided an advantageous microenvironment around the catalytic center (hemin), essentially similar to that supplied by apo-proteins in natural enzymes. Significantly, by taking advantage of the special structure of hemin and multiple-site interactions provided by several functional monomers, the intrinsic difficulties for MIPs in recognizing template molecules in polar solutions were overcome. The newly developed polymer showed considerable recognizing ability toward HVA, catalytic activity, substrate specificity and also stability, which are the merits lacked by the natural peroxidase. Meanwhile, the ease of recovery and reuse the MIP implies the potential for industrial application
Template and target information: homovanillic acid, HVA

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