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Reference type: Journal
Authors: Yildirim E, Caykara T
Article Title: Ibuprofen-imprinted ultrathin poly[N-(2-hydroxypropyl) methacrylamide] films.
Publication date: 2018
Journal: Journal of Applied Polymer Science
Volume: 135
Issue: (4)
Page numbers: ArticleNo45707.
DOI: 10.1002/app.45707

Abstract: Surface molecularly imprinted (MIP) poly[N-(2-hydroxypropyl) methacrylamide] [poly(HPMA)] films were prepared via interface-mediated reversible addition-fragmentation chain transfer (RAFT) polymerization from 4-cyano-4-(propylsulfanylthiocarbonyl) sulfanyl pentanoic acid immobilized silicon substrate using N-(2-hydroxypropyl) methacrylamide as the functional monomer, N,N'-methylene(bis)acrylamide as the crosslinking agent, and ibuprofen as the template molecule. The highly crosslinked MIP layer (~12 nm) was homogeneously grafted onto the silicon surface, which favors fast mass transfer and rapid binding kinetics. Binding capacities and adsorption parameters of the MIP poly(HPMA) films were calculated from the root-mean-square roughness data obtained by atomic force microscopy measurements using the Luzinov and Langmuir equations adopted for this study. The target binding assays demonstrate the desirable binding capacity and imprinting efficiency of the MIP poly(HPMA) films. Meanwhile, the computational optimization and energy calculations showed the formation of the self-assembly of monomer and template molecule via noncovalent interactions that leads to a 1:4 molecular complex between ibuprofen and N-(2-hydroxypropyl) methacrylamide. This study provides a versatile approach to the quantitative determination of low-molecular-weight biomolecules on surface-imprinted polymers. 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 45707
Template and target information: ibuprofen
Author keywords: adsorption, films, molecular recognition, monolayers and polymer brushes

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