Order−Disorder Transition in Surface-Induced Nanopattern of Diblock Copolymer Films
Formation of surface-induced nanopattern (SINPAT) in ultrathin diblock copolymer films is studied by scanning force microscopy and Monte Carlo simulation. The pattern is caused by strong adsorption of one of the two blocks forming a quasi-two-dimensional coil while the other block dewets this adsorp...
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Published in | Macromolecules Vol. 33; no. 1; pp. 150 - 157 |
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Main Authors | , , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Washington, DC
American Chemical Society
11.01.2000
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Subjects | |
Online Access | Get full text |
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Summary: | Formation of surface-induced nanopattern (SINPAT) in ultrathin diblock copolymer films is studied by scanning force microscopy and Monte Carlo simulation. The pattern is caused by strong adsorption of one of the two blocks forming a quasi-two-dimensional coil while the other block dewets this adsorption layer. Scanning force microscopy allowed to observe an order−disorder transition for a SINPAT film of polystyrene-block-poly(2-vinylpyridine) on mica when the length of the dewetting polystyrene block was varied. The experimental data are compared with the Monte Carlo simulations which demonstrate how the pattern formation depends on the degree of polymerization of the dewetting block and the unfavorable interaction potential between the different components. |
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Bibliography: | istex:2172B3DCE68EBB7756FE70C005DFF05F82E5EE68 ark:/67375/TPS-F2DK35GP-M |
ISSN: | 0024-9297 1520-5835 |
DOI: | 10.1021/ma990751p |