title: Kinetically Controlled Sequential Growth of Surface-Grafted Chiral Supramolecular Copolymers.
abstract: 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 β-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.
authors.affiliation: Institute of Organic Chemistry, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, 55128, Mainz, Germany.|Organic Chemistry Institute, Westfälische Wilhelms-Universität Münster, Correnstrasse 40, 48149, Münster, Germany.
authors.forename: Hendrik
authors.initials: H
authors.lastname: Frisch
authors.affiliation: Organic Chemistry Institute, Westfälische Wilhelms-Universität Münster, Correnstrasse 40, 48149, Münster, Germany.
authors.forename: Eva-Corinna
authors.initials: EC
authors.lastname: Fritz
authors.affiliation: Institute of Organic Chemistry, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, 55128, Mainz, Germany.
authors.forename: Friedrich
authors.initials: F
authors.lastname: Stricker
authors.affiliation: Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany.
authors.forename: Lars
authors.initials: L
authors.lastname: Schmüser
authors.affiliation: Institute of Organic Chemistry, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, 55128, Mainz, Germany.
authors.forename: Daniel
authors.initials: D
authors.lastname: Spitzer
authors.affiliation: Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany.
authors.forename: Tobias
authors.initials: T
authors.lastname: Weidner
authors.affiliation: Organic Chemistry Institute, Westfälische Wilhelms-Universität Münster, Correnstrasse 40, 48149, Münster, Germany. b.j.ravoo@uni-muenster.de.
authors.forename: Bart Jan
authors.initials: BJ
authors.lastname: Ravoo
authors.affiliation: Institute of Organic Chemistry, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, 55128, Mainz, Germany. besenius@uni-mainz.de.
authors.forename: Pol
authors.identifier: 0000-0001-7478-4459
authors.initials: P
authors.lastname: Besenius
keywords: charge regulation; kinetic control; microstructures; self-assembly; supramolecular chemistry