Selective Localization of Preformed Nanoparticles in Morphologically Controllable Block Copolymer Assemblies，第六届亚欧研讨会上处理和性能增强聚合物会议文集（2013.6.2-6 武汉）-中国聚合物网,论文下载

Selective Localization of Preformed Nanoparticles in Morphologically Controllable Block Copolymer Assemblies

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关键词：

Nanoparticle Supramolecules Self-assembly Hybrid micelle Directed assembly

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所属学科：

分子表征

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第六届亚欧研讨会上处理和性能增强聚合物会议文集（2013.6.2-6 武汉）

简介：

Propertiesofnanocompositesdependnotonlyontheindividualbuildingblocks,butalsoontheorganizationandspatialarrangementofindividualblockswithinthehost.Supramolecularpolymersprovidemoreversatileroutestocontrolspatialarrangementofthenanoparticles(NPs)overmultiplelengthscales.WewillintroduceasimpleandversatileapproachfortheencapsulationofNPswithinblockcopolymermicellarcoresthroughdirectedsupramolecularassembly.Typically,polystyrene-poly(4-vinylpyridine)PS-P4VPand3-n-pentadecylphenoI(PDP)weredissolvedinchloroformtoformPS-P4VP(PDP)xcomb-coilsupramoleculesbyforminghydrogenbondingbetweenP4VPandPDP,whichcanfurtherself-assembleintohierarchicalstructures.UponadditionofPS-coatedgoldNPstothehierarchicalsupramolecules,NPswereselectivelyincorporatedintoPScylindricallyconfinedphaseswithinP4VP(PDP)i.omatrices.Isolatedworm-likemicelleswithuniformlydispersedNPswereobtainedthroughremovalofthesmallmoleculePDPbyrupturingthehydrogenbonding.Thisversatileapproachallowsustofinetuneinterparticledistanceandmicellarmorphologybyvaryingthecontentofnanoparticlesand/orhydrogenbondingagentinthesupramolecularassemblies.ThenumberofNPsineachmicellecanbeeffectivelyincreasedbysimplyaddingNPsinthePSdomainsandPDPtoP4VPdomainsimultaneously.LocationandorientationoftheNPscanbetailoredbyvaryingthecontentofNPs,theaspectratiooftheNPs,orthediameterofthecylindricalnano-objects.[3]GenerationoforderedNPsarrayswithsingleparticleprecisionovermacroscopicdistanceswillnotonlyenableabasicunderstandingofthephysicalpropertiesofthismaterial,butalsofabricatenext-generationNP-baseddevices.

作者：

K. Wang, W. K. Li,J. T. Zhu

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2013-07-04 14:21:51

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