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Molecularly imprinted soluble nanogels as a peroxidase-like catalyst in the oxidation reaction of homovanillic acid under aqueous conditions

Paper ID Volume ID Publish Year Pages File Format Full-Text
43556 45976 2007 7 PDF Available
Title
Molecularly imprinted soluble nanogels as a peroxidase-like catalyst in the oxidation reaction of homovanillic acid under aqueous conditions
Abstract

A novel type of soluble peroxidase-like imprinted nanogels incorporating hemin, acrylamide and 4-vinylpyridine as functional monomers was prepared by solution polymerization method. Such highly crosslinked nanogels could be conveniently separated from the reaction mixture through precipitation, ultracentrifugation or ultrafiltration, whereby they could be analyzed by gel permeation chromatography (GPC), transmission electron microscopy (TEM), dynamic light scattering (DLS) and environmental scanning electron microscope (ESEM). More importantly, the molecularly imprinted polymers (MIP) showed greater catalytic activity in DMSO–Tris–HCl buffer than in pure Tris–HCl buffer mainly because it could behave as a homogeneous catalyst under appropriate DMSO–Tris–HCl system. The results suggested that the unavoidably restrained transport properties inside conventional insoluble imprinted polymers might be overcome. Additionally, the MIP showed higher adsorption towards substrate under aqueous conditions compared with its corresponding blank polymer, which was due in part to its higher catalytic activity.

Graphical abstractA novel type of soluble peroxidase-like imprinted nanogels incorporating hemin, acrylamide and 4-vinylpyridine as functional monomers was prepared by solution polymerization method. Such highly crosslinked molecularly imprinted nanogels showed greater catalytic activity in DMSO–Tris–HCl buffer than in pure Tris–HCl buffer mainly because it could behave as a homogeneous catalyst under appropriate DMSO–Tris–HCl system. Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Molecularly imprinted polymers; Enzyme mimic; Nanogel; Peroxidase
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Molecularly imprinted soluble nanogels as a peroxidase-like catalyst in the oxidation reaction of homovanillic acid under aqueous conditions
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 328, Issue 2, 10 September 2007, Pages 252–258
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
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