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Keywords:

  • Y-shaped polymer brushes;
  • stimuli-responsive wetting;
  • in-chain functionalized block copolymers;
  • anionic polymerization;
  • grafting-to method
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A general concept for the preparation of junction-point-reactive, amphiphilic Y-shaped block copolymer brushes for ultrathin polymer films is demonstrated, combining anionic polymerization techniques. The polymer films (1–3 nm) exhibit reversible, stimuli-responsive wetting behavior upon application of different external stimuli (temperature and solvent). Contact angle measurements confirm the reversible hydrophobization with shifts up to 23°.