Journal
MACROMOLECULES
Volume 46, Issue 9, Pages 3648-3653Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ma400188s
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Funding
- Alexander von Humboldt foundation
- CECAM nano SMSM at the Max-Planck Institute for Polymer Research in Mainz, Germany
- Marie Curie ITN-COMPLOIDS [234810]
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By employing monomer-resolved computer simulations and analytical considerations based on polymer scaling theory, we analyze the conformations and interactions of multiarm star polymers strongly adsorbed on a smooth, two-dimensional plane. We find a stronger stretching of the arms as well as a stronger repulsive, effective interaction than in the three-dimensional case. In particular, the star size: scales with the number of arms f as similar to f(1/4) and the effective interaction as similar to f(2), as opposed to similar to f(1/5) and similar to f(3/2), respectively, in three dimensions. Our results demonstrate the dramatic effect that geometric confinement can have on the effective interactions and the subsequent correlations of soft colloids in general, for which the conformation can be altered as a result of geometrical constraints imposed on them.
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