Thermo?responsive topological metamorphosis in covalent?and?supramolecular polymer architectures

Topological metamorphosis represents a powerful approach to modulate the properties of polymers. However, it still remains major challenge achieve tunability bulk mechanical via topological transformation in supramolecular polymer systems. Herein, we couple covalent and single system—referred as covalent-and-supramolecular (CSP)—to realize thermo-responsive macromolecular metamorphosis. The CSP is able topologically switch from grafted cross-linked network by taking advantage synergistic dynamic interactions host–guest interactions. Benefiting structural transformation, brittleness intrinsically evolves into toughness our architectures with minimum change their molecular compositions furan–maleimide anthracene–maleimide linkers. Our work demonstrates that polymers are promising platform design smart materials not only due inherent stimuli-responsive but also because abilities determining alterable structures.