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Author

Park, Soojin
Nano-Functional Materials Lab
Research Interests
  • Block Copolymers, nanostructured materials for Lithium-Ion batteries, wearable and stretchable energy storage applications

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Precise placements of metal nanoparticles from reversible block copolymer nanostructures

Cited 17 times inthomson ciCited 12 times inthomson ci
Title
Precise placements of metal nanoparticles from reversible block copolymer nanostructures
Author
Cho, HeesookPark, HyungminRussell, Thomas P.Park, Soojin
Keywords
Concentration of; External stimulus; Initial morphology; Metal nanoparticles; Metal precursor; Minor components; Oxygen plasma treatments; Poly(2-vinylpyridine) (P2VP); Porous structures; Solvent annealing; Solvent vapors; Spatial location
Issue Date
2010
Publisher
ROYAL SOC CHEMISTRY
Citation
JOURNAL OF MATERIALS CHEMISTRY, v.20, no.24, pp.5047 - 5051
Abstract
We demonstrate the fabrication of reversible block copolymer (BCP) templates that can be used to control the spatial location of metal precursors and nanoparticles. A highly ordered polystyrene-block-poly(2-vinylpyridine) (PS-b-P2VP) micellar array was obtained by solvent annealing. Subsequent immersion of the films in a preferential solvent for the minor component block caused a reorganization of the film to generate a porous structure upon drying. When such reconstructed films were subjected to external stimuli, like solvent vapor or heat, the initial morphology was recovered. These reversible BCP templates were used to control the placement such that, subsequently, oxygen plasma treatment led to the precise placement of metal nanoparticles in a film. By controlling the concentration of the metal precursor solutions, the sizes of the nanoparticles could be tuned.
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DOI
http://dx.doi.org/10.1039/c0jm00651c
ISSN
0959-9428
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ECHE_Journal Papers

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