title: Photo- and Metallo-responsive N-Alkyl α-Bisimines as Orthogonally Addressable Main-Chain Functional Groups in Metathesis Polymers.
abstract: N-alkyl α-bisimines were employed as main-chain functional groups in acyclic diene metathesis (ADMET)-polymers, conferring dual responsiveness for the controlled switching of the polymeric particle shape with light and metal ions. Photochemical Z/E-isomerization leads to a significant and reversible change in hydrodynamic volume, thus introducing simple imines as novel photoswitches for light-responsive materials. Mild imine-directed CH activation by Pd(OAc)2 is demonstrated as a new single-chain nanoparticle (SCNP) folding process, enabling a controlled atom- and step-economic SCNP synthesis. The combination of light- and metallo-responsiveness in the same polymer provides the ability for orthogonal switching, a valuable tool for advanced functional material design.
authors.affiliation: Institut de Science et d'Ingénierie Supramoléculaires, Université de Strasbourg , 8 allée Gaspard Monge, 67000 Strasbourg, France.
authors.forename: Lutz
authors.initials: L
authors.lastname: Greb
authors.affiliation: Preparative Macromolecular Chemistry, Institut für Technische Chemie und Polymerchemie, Karlsruhe Institute of Technology (KIT) , Engesserstrasse 18, 76131 Karlsruhe, Germany.
authors.forename: Hatice
authors.initials: H
authors.lastname: Mutlu
authors.affiliation: Preparative Macromolecular Chemistry, Institut für Technische Chemie und Polymerchemie, Karlsruhe Institute of Technology (KIT) , Engesserstrasse 18, 76131 Karlsruhe, Germany.
authors.forename: Christopher
authors.initials: C
authors.lastname: Barner-Kowollik
authors.affiliation: Institut de Science et d'Ingénierie Supramoléculaires, Université de Strasbourg , 8 allée Gaspard Monge, 67000 Strasbourg, France.
authors.forename: Jean-Marie
authors.initials: JM
authors.lastname: Lehn