2017
DOI: 10.1021/acs.macromol.7b00088
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Fabrication and Interfacial Properties of Polymer Brush Gradients by Surface-Initiated Cu(0)-Mediated Controlled Radical Polymerization

Abstract: Surface-initiated Cu(0)-mediated controlled radical polymerization (Si-CuCRP) can be successfully applied to fabricate poly[(oligoethylene glycol)methyl ether methacrylate] (POEGMA) brushes in one pot, presenting a grafting-density gradient across the surface. This is achieved by continuously varying the distance (d) between a copper plate, used as a source of Cu species, and the initiator-functionalized substrate. X-ray photoelectron spectroscopy (XPS) analysis of monolayers of Cu Iselective ligands demonstra… Show more

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Cited by 66 publications
(105 citation statements)
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“…In the case of SI‐Cu 0 CRP, PIPOx brush gradients can be prepared straightforward using a tilted Cu‐plate (Figure a). Because the gradual variation of the distance (D) between the Cu source and initiating‐substrate allows gradually changed polymerization rate and thus leads to polymer brush gradients . Even after side chain grafting, the gradient conformation was retained, but their thickness were systematically increased.…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…In the case of SI‐Cu 0 CRP, PIPOx brush gradients can be prepared straightforward using a tilted Cu‐plate (Figure a). Because the gradual variation of the distance (D) between the Cu source and initiating‐substrate allows gradually changed polymerization rate and thus leads to polymer brush gradients . Even after side chain grafting, the gradient conformation was retained, but their thickness were systematically increased.…”
Section: Resultsmentioning
confidence: 99%
“…More importantly, the SI‐Cu 0 CRP is oxygen tolerant and requires very limited amount of monomers (μL), and therefore can be used to prepare polymer brushes with low cost . In addition, by simply variation of the distance ( D ) between the copper plate and the initiating surface, various structured polymer brushes can be prepared …”
Section: Introductionmentioning
confidence: 99%
“…Recently, we optimized the CuCRP for polymer brush synthesis via surface‐initiated polymerization CuCRP (SI‐CuCRP) by simply using a copper plate as the catalyst, a ligand and the monomer of choice but no additional Cu I/II sources . The SI‐CuCRP was found to be the fastest SI‐CRP for many monomers, and resulted in very dense brushes and homogeneous brushes even on the wafer scale . Very recently, this method was also successfully adopted for SI‐ATRP .…”
Section: Figurementioning
confidence: 99%
“…They are also able to demonstrate switchable properties due to the stimuli‐responsive behavior of the polymer chains that were grafted onto the surface . The responsiveness of these brushes was utilized to design surfaces with tunable wetting properties with regard to adhesion, adsorption, friction, and other properties . In one approach for the design of stimuli‐responsive brushes, the switching is provided by changing the properties (charge and hydrophobicity) of the polymer themselves .…”
Section: Introductionmentioning
confidence: 99%