期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 55, 期 25, 页码 7242-7246出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201601048
关键词
charge regulation; kinetic control; microstructures; self-assembly; supramolecular chemistry
资金
- Fonds der Chemischen Industrie
- Deutsche Forschungsgemeinschaft [SFB 858]
- Max Planck Graduate Center
We report a facile strategy to grow supramolecular copolymers on Au surfaces by successively exposing a surface-anchored monomer to solutions of oppositely charged peptide comonomers. Charge regulation on the active chain end of the polymer sufficiently slows down the kinetics of the self-assembly process to produce kinetically trapped copolymers at near-neutral pH. We thereby achieve architectural control at three levels: The beta-sheet sequences direct the polymerization away from the surface, the height of the supramolecular copolymer brushes is well-controlled by the stepwise nature of the alternating copolymer growth, and 2D spatial resolution is realized by using micropatterned initiating monomers. The programmable nature of the resulting architectures renders this concept attractive for the development of customized biomaterials or chiral interfaces for optoelectronics and sensor applications.
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