Tailoring Core-Shell Polymer-Coated Nanoparticles as Block Copolymer Surfactants
DC Field | Value | Language |
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dc.contributor.author | Kim, Bumjoon J. | - |
dc.contributor.author | Fredrickson, Glenn H. | - |
dc.contributor.author | Bang, Joona | - |
dc.contributor.author | Hawker, Craig J. | - |
dc.contributor.author | Kramer, Edward J. | - |
dc.date.accessioned | 2021-09-08T14:22:54Z | - |
dc.date.available | 2021-09-08T14:22:54Z | - |
dc.date.created | 2021-06-10 | - |
dc.date.issued | 2009-08-25 | - |
dc.identifier.issn | 0024-9297 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/119476 | - |
dc.description.abstract | The effect of core-shell polymer-coated nanoparticles on block copolymer morphology is investigated systematically by controlling particle positioning within a block copolymer template. Our approach of varying the areal chain density (Sigma) of short thiol terminated polystyrene (PS-SH) brushes on the particles where the molecular weight (M-n) of the PS ligands (2.5 kg/mol) is used to control the fraction of the particles adsorbed to the interface of PS-b-P2VP diblock copolymer domains (M-n = 196 kg/mol). The change in Sigma from 2.38 to 0.49 chains/nm(2) brings systematic control over the fraction of Au particles bound to the PS/ P2VP interface (f(i)), this fraction ranging from 0 to 95%. Particles with Sigma of 2.38 chains/nm(2) (f(i) similar to 0) were observed to localize within the PS domains and further produce a macroscopic particle aggregated phase separate from the PS-b-P2VP mesophase. In contrast, decreasing the 2: of PS chains provides for strong binding of Au nanoparticles to the PS/P2VP interfaces as a consequence of preferential wetting of one block of the copolymer (P2VP) to the Au substrate. Interestingly, the addition of low volume fractions (phi(P)) of such nanoparticle surfactants (Sigma < 1.1 chains/nm(2)) to lamellar diblock copolymers initially leads to a decrease in lamellar thickness, a consequence of decreasing interfacial tension, up to a critical value of phi(P) beyond which the block copolymer adopts a bicontinuous morphology. The relationship between domain spacing and morphology of block copolymer with the level of nanoparticle surfactants will be discussed based on a strong-segregation model. In addition, the rational design of nanoparticle surfactants based on the nature and density of the grafted chains will be described. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.subject | GOLD NANOPARTICLES | - |
dc.subject | DIBLOCK-COPOLYMER | - |
dc.subject | MOLECULAR-WEIGHT | - |
dc.subject | BICONTINUOUS MICROEMULSIONS | - |
dc.subject | SOLAR-CELLS | - |
dc.subject | BLENDS | - |
dc.subject | LOCATION | - |
dc.subject | MIXTURES | - |
dc.subject | HOMOPOLYMER | - |
dc.subject | COMPOSITES | - |
dc.title | Tailoring Core-Shell Polymer-Coated Nanoparticles as Block Copolymer Surfactants | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Bang, Joona | - |
dc.identifier.doi | 10.1021/ma9009406 | - |
dc.identifier.scopusid | 2-s2.0-68949191228 | - |
dc.identifier.wosid | 000269043200041 | - |
dc.identifier.bibliographicCitation | MACROMOLECULES, v.42, no.16, pp.6193 - 6201 | - |
dc.relation.isPartOf | MACROMOLECULES | - |
dc.citation.title | MACROMOLECULES | - |
dc.citation.volume | 42 | - |
dc.citation.number | 16 | - |
dc.citation.startPage | 6193 | - |
dc.citation.endPage | 6201 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Polymer Science | - |
dc.relation.journalWebOfScienceCategory | Polymer Science | - |
dc.subject.keywordPlus | GOLD NANOPARTICLES | - |
dc.subject.keywordPlus | DIBLOCK-COPOLYMER | - |
dc.subject.keywordPlus | MOLECULAR-WEIGHT | - |
dc.subject.keywordPlus | BICONTINUOUS MICROEMULSIONS | - |
dc.subject.keywordPlus | SOLAR-CELLS | - |
dc.subject.keywordPlus | BLENDS | - |
dc.subject.keywordPlus | LOCATION | - |
dc.subject.keywordPlus | MIXTURES | - |
dc.subject.keywordPlus | HOMOPOLYMER | - |
dc.subject.keywordPlus | COMPOSITES | - |
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