Advanced Functional Materials · 2007 · 179 citations · 45 references
Natural SciencesChemistryMaterials ScienceNanomaterialsNanotechnologyPolymer ChemistryNanocatalysisNanocompositesPolymer NanocompositesPolymeric NanomaterialsPolymeric NanoparticlesSurface Functionalization Of NanomaterialsAtom Transfer Radical PolymerizationCatalytic ActivityCatalytic Activity EnhancementCore-shell ParticlesGold NanostructuresGrafted Polymer LayersNanoparticlesNanostructured Catalysts
Abstract Binary thermosensitive nanocomposites are fabricated by grafting block copolymers of poly( N ‐isopropylacrylamide) and poly(methoxy‐oligo(ethylene glycol) methacrylate) onto gold nanoparticles through consecutive, surface‐initiated, atom‐transfer radical polymerization (ATRP). These Au@copolymer nanocomposites display a well‐defined core/shell nanostructure and have two thermosensitive points near 33 and 55 °C in an aqueous suspension corresponding to the thermally induced conformational transition of inner homopolymer segments and outer oligo(ethylene glycol)‐containing copolymer layer, respectively. Silver nanoparticles trapped within Au@copolymer nanocomposites with weakly crosslinked shells display thermally modulated catalytic activity as heterogeneous catalysts because of the thermosensitive collapse of the polymer layers.
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Predicting the Mesophases of Copolymer-Nanoparticle Composites
R. B. Thompson, Valeriy V. Ginzburg, M. W. Matsen et al. · Science · 2001 · 725 citations
Natural Sciences, Materials Engineering, Materials Science +17