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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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A simple route to highly oriented and ordered nanoporous block copolymer templates

Cited 118 times inthomson ciCited 110 times inthomson ci
Title
A simple route to highly oriented and ordered nanoporous block copolymer templates
Author
Park, SoojinWang, Jia-YuKim, BokyungXu, JiRussell, Thomas P.
Keywords
Block copolymer; Gold evaporation; Perpendicular orientation; PS-b-P4VP; Reactive ion etching; Surface reconstruction
Issue Date
200804
Publisher
AMER CHEMICAL SOC
Citation
ACS NANO, v.2, no.4, pp.766 - 772
Abstract
Controlling the orientation and lateral ordering of the block copolymer microdomains is essential to their use as templates and scaffolds for the fabrication of nanostructured materials. In addition, a process must be robust, simple to implement, and rapid, and should not introduce disruptive processing steps that would impede their use. Here, we describe thin films of poly(styrene-b-4-vinylpyridine) (PS-b-P4VP) diblock copolymers, spin-coated from mixed solvents that show highly oriented, cylindrical microdomains with a high degree of order on a wide range of substrates, including silicon oxide, polystyrene, germanium, polyimide, and poly(butylene terephthalate). In addition, the preferential solvation of the P4VP block with an alcohol caused a surface reconstruction that resulted in the formation of a nanoporous film upon drying. The evaporation of gold onto the reconstructed films produced thermally stable and reactive ion etching resistant films.
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DOI
http://dx.doi.org/10.1021/nn7004415
ISSN
1936-0851
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