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  Nanopattern of diblock copolymers selectively adsorbed on a plane surface

Potemkin, I. I., Kramarenko, E. Y., Khokhlov, A. R., Winkler, R. G., Reineker, P., Eibeck, P., et al. (1999). Nanopattern of diblock copolymers selectively adsorbed on a plane surface. Langmuir, 15(21), 7290-7298. doi:10.1021/la9900730.

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Potemkin, I. I., Author
Kramarenko, E. Y., Author
Khokhlov, A. R., Author
Winkler, R. G., Author
Reineker, P., Author
Eibeck, P., Author
Spatz, J. P.1, 2, Author              
Möller, M., Author
Affiliations:
1Cellular Biophysics, Max Planck Institute for Medical Research, Max Planck Society, ou_2364731              
2Biophysical Chemistry, Institute of Physical Chemistry, University of Heidelberg, 69120 Heidelberg, Germany, ou_persistent22              

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 Abstract: Surface interaction controlled microphase separation leading to the formation of chemically heterogeneous surface nanopatterns in dry ultrathin films of A−B diblock copolymers is studied experimentally and theoretically in the strong segregation limit. On a planar surface one of the blocks (A block) is strongly adsorbed, forming a tightly bound monomolecular layer (two-dimensional melt). The nonadsorbed B blocks can aggregate due to incompatibility with the A-block layer on the substrate and with the air. As a result, a chemically heterogeneous surface pattern can emerge. Depending on the block length ratio and the interaction parameters, the dewetting B blocks can assemble to either globular surface micelles or wormlike surface aggregates, that is, a point or a striped surface pattern. The region of stability of these morphologies and the main parameters, such as aggregation number, size, and periodicity, of the surface micelles and wormlike surface aggregates have been determined as functions of the lengths of the blocks and the interaction energies of the blocks with each other and with the air. The phase diagram is compared with experimental data for poly(styrene)-block-poly(4-vinylpyridine) on mica.

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Language(s): eng - English
 Dates: 1999-01-251999-04-281999-10-181999-10-01
 Publication Status: Published in print
 Pages: 9
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: Other: WOS:000083156000030
DOI: 10.1021/la9900730
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Title: Langmuir
Source Genre: Journal
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Publ. Info: Columbus, OH : American Chemical Society
Pages: - Volume / Issue: 15 (21) Sequence Number: - Start / End Page: 7290 - 7298 Identifier: ISSN: 0743-7463
CoNE: https://pure.mpg.de/cone/journals/resource/954925541194