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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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Directed Self-Assembly of Block Copolymers on Two-Dimensional Chemical Patterns Fabricated by Electro-Oxidation Nano lithography

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Title
Directed Self-Assembly of Block Copolymers on Two-Dimensional Chemical Patterns Fabricated by Electro-Oxidation Nano lithography
Author
Xu, JiPark, SoojinWang, ShiliuRussell, Thomas P.Ocko, Benjamin M.Checco, Antonio
Keywords
Chemical equations; Chemical pattern; Diblock-copolymer; Directed self-assembly; Micro-domains; Nanostripes; Octadecyltrichlorosilane monolayers; Spatial orientations; Surface normals
Issue Date
201005
Publisher
WILEY-V C H VERLAG GMBH
Citation
ADVANCED MATERIALS, v.22, no.20, pp.2268 - 2272
Abstract
A hexagonal web of carboxylic-terminated nanostripes (left image, bright areas) is patterned onto a methyl-terminated surface of an octadecyltrichlorosilane monolayer. A thermally annealed polystyrene-block-poly(ethylene oxide) (PS-b-PEO) thin-film, spin-cast on the chemical pattern (right image), exhibits surface normal oriented cylindrical PEO microdomains on the methyl-terminated regions only. These chemical patterns effectively template the order and spatial orientation of diblock-copolymer microdomains.
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DOI
http://dx.doi.org/10.1002/adma.200903640
ISSN
0935-9648
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