Thin poly(styrene-block-4-hydroxystyrene) block copolymer films spin-coated directly on topographic prepattern substrates

Geuntak Lee, Pil Sung Jo, Bokyung Yoon, Tae Hee Kim, Himadri Acharya, Hiroshi Ito, Ho Cheol Kim, June Huh, Cheolmin Park

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

We have investigated the formation of as-cast thin films of a poly(styrene-block-4-hydroxystyrene) (PS-b-PHOST) copolymer spin-coated directly on topographic prepattern substrates. Either wetting or dewetting of a polymer thin film, on the elevated regions occurs in the nonequilibrium state during spin-coating with solvent vapor saturated and strongly depends on the dimensions of the prepatterns. The ratio of periodic unit area to elevated one of a prepattern (β value) is found as one of the most important factors for wettability of a thin film. The dewetting of a thin film, guided by the edges of either elevated individual periodic lines or mesas, took place with self-assembled block copolymer nanostructure when the β value was greater than a critical value of ̃4 in our system.

Original languageEnglish
Pages (from-to)9290-9294
Number of pages5
JournalMacromolecules
Volume41
Issue number23
DOIs
Publication statusPublished - 2008 Dec 9

Fingerprint

Styrene
Block copolymers
Thin films
Substrates
Wetting
Spin coating
Polymer films
Nanostructures
Copolymers
Vapors
4-vinylphenol

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry

Cite this

Lee, Geuntak ; Jo, Pil Sung ; Yoon, Bokyung ; Kim, Tae Hee ; Acharya, Himadri ; Ito, Hiroshi ; Kim, Ho Cheol ; Huh, June ; Park, Cheolmin. / Thin poly(styrene-block-4-hydroxystyrene) block copolymer films spin-coated directly on topographic prepattern substrates. In: Macromolecules. 2008 ; Vol. 41, No. 23. pp. 9290-9294.
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Thin poly(styrene-block-4-hydroxystyrene) block copolymer films spin-coated directly on topographic prepattern substrates. / Lee, Geuntak; Jo, Pil Sung; Yoon, Bokyung; Kim, Tae Hee; Acharya, Himadri; Ito, Hiroshi; Kim, Ho Cheol; Huh, June; Park, Cheolmin.

In: Macromolecules, Vol. 41, No. 23, 09.12.2008, p. 9290-9294.

Research output: Contribution to journalArticle

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AU - Lee, Geuntak

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AU - Yoon, Bokyung

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AU - Acharya, Himadri

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AU - Kim, Ho Cheol

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