Unexpected hexagonally perforated layer morphology of PS-b-PMMA block copolymer in supported thin film
SCIE
SCOPUS
- Title
- Unexpected hexagonally perforated layer morphology of PS-b-PMMA block copolymer in supported thin film
- Authors
- Park, I; Park, S; Park, HW; Chang, T; Yang, HC; Ryu, CY
- Date Issued
- 2006-01-10
- Publisher
- AMER CHEMICAL SOC
- Abstract
- Block copolymer ordering in thin films on a preferentially wetting flat substrate is studied using a polystyrene-b-poly(methyl methacrylate) (PS-b-PMMA) diblock copolymer, which forms PMMA cylinders in bulk. Tapping-rnode AFM and cross-sectional TEM were employed to characterize the thin film ordered structure of the PS-b-PMMA on a flat silicon surface with native oxide that is preferentially wetted by PMMA blocks. The PS-b-PMMA in thin film develops hexagonally perforated layer (HPL), which is different from its cylindrical bulk morphology. The HPL structure of PS-b-PMMA exhibits islands and holes at the surface, which persists up to the film thickness as high as 6L(0). Surface-induced reorganization of the block copolymers on PMMA-preferring flat surface may be responsible for the formation of the layerlike nonbulk structure of HPL, which has been templated from the flat surface and propagated into a multilayered HPL films.
- Keywords
- DIBLOCK COPOLYMERS; PHASE-BEHAVIOR; ARRAYS; NANOSTRUCTURES; ALIGNMENT; SURFACES; DOMAINS; HPLC
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/24244
- DOI
- 10.1021/MA0515937
- ISSN
- 0024-9297
- Article Type
- Article
- Citation
- MACROMOLECULES, vol. 39, no. 1, page. 315 - 318, 2006-01-10
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- There are no files associated with this item.
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