Journal ArticleDOI
Modification of Gold Surfaces With Water-Soluble (Co)polymers Prepared Via Aqueous Reversible Addition-Fragmentation Chain Transfer (RAFT) Polymerization
Brent S. Sumerlin,Andrew B. Lowe,Paul A. Stroud,Ping Zhang,Marek W. Urban,Charles L. McCormick +5 more
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TLDR
In this paper, the authors reported the immobilization of poly(sodium 4-styrenesulfonate), poly((ar-vinylbenzyl) trimethylammonium chloride), poly(N,N-dimethylacrylamide), and poly(3-[2-(N-methylacrylido)-ethyldimethyl ammonio]propane sulfonate-b-N, N-dimethylamide) onto gold films.Abstract:
Reversible addition−fragmentation chain transfer (RAFT) is a versatile, controlled free radical polymerization technique that operates via a degenerative transfer mechanism in which a thiocarbonylthio compound acts as a chain transfer agent. The subsequent reduction of the dithioester end groups to thiols allows the preparation of (co)polymer-modified gold surfaces. Herein we report the immobilization of poly(sodium 4-styrenesulfonate), poly((ar-vinylbenzyl) trimethylammonium chloride), poly(N,N-dimethylacrylamide), and poly(3-[2-(N-methylacrylamido)-ethyldimethyl ammonio]propane sulfonate-b-N,N-dimethylacrylamide) onto gold films. The presence of the immobilized (co)polymers was confirmed by atomic force microscopy, attenuated total reflectance Fourier transform infrared spectroscopy, and surface contact angle measurements. The gold film modified with the block copolymer demonstrated stimuli-responsive behavior as evidenced by its water contact angle being similar to that of poly(N,N-dimethylacrylamide) ...read more
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Journal ArticleDOI
Living radical polymerization by the RAFT process
TL;DR: A review of living radical polymerization achieved with thiocarbonylthio compounds by a mechanism of reversible addition-fragmentation chain transfer (RAFT) is presented in this article.
Journal ArticleDOI
Thiol-ene “click” reactions and recent applications in polymer and materials synthesis
TL;DR: In this paper, a review highlights examples of recent applications of both the radical-mediated and base/nucleophile-initiated thiol-ene reactions in polymer and materials synthesis.
Journal ArticleDOI
Radical addition-fragmentation chemistry in polymer synthesis
TL;DR: In this paper, a review of the development of addition-fragmentation chain transfer agents and related ring-opening monomers highlighting recent innovation in these areas is presented, including dithioesters, trithiocarbonates, dithioco-baramates and xanthates.
Journal ArticleDOI
Macromolecular design via réversible addition-fragmentation chain transfer (RAFT)/Xanthates (MADIX) polymerization
TL;DR: A review of the progress made in reversible addition-fragmentation chain transfer (RAFT) and macromolecular design via the interchange of xanthates (MADIX) polymerization can be found in this article.
Journal ArticleDOI
Bioapplications of RAFT polymerization.
TL;DR: The control of molecular weight and molecular weight distribution has enabled access to complex architectures and site specific functionality that were previously impossible to achieve via traditional free radical polymerizations.
References
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Journal ArticleDOI
DNA-modified core-shell Ag/Au nanoparticles.
Journal ArticleDOI
Water-Soluble Polymers. 81. Direct Synthesis of Hydrophilic Styrenic-Based Homopolymers and Block Copolymers in Aqueous Solution via RAFT
TL;DR: In this paper, a block copolymer of (ar-vinylbenzyl)trimethylammonium chloride with N,N-dimethylvinyl benzylbenzylamine has been synthesized, using the same methodology.
Journal ArticleDOI
Homogeneous Hydrogenation Catalysis with Monodisperse, Dendrimer-Encapsulated Pd and Pt Nanoparticles.
Mingqi Zhao,Richard M. Crooks +1 more
TL;DR: Extraordinarily stable, monodisperse noble metal nanoparticles can be prepared by using dendrimers as both templates and stabilizers, and the catalytic activity and selectivity of these materials can be controlled by adjusting the d endrimer generation.
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Nanometer Gold Clusters Protected by Surface-Bound Monolayers of Thiolated Poly(ethylene glycol) Polymer Electrolyte
TL;DR: Wuelfing et al. as discussed by the authors describe metal nanoparticles that are stabilized in solutions by polymersurfactants or are imbedded in polymer composites, which are of particular interest.