Large‐scale Conformational Changes of Diindole Functional Groups Driven by Cation‐π Interactions and the Toughening Mechanism of Thermosets

Abstract This is described that a new concept for the design of toughening supramolecular thermosets by incorporating diindole groups, which are functionalized via cation‐π interactions in covalently crosslinked networks. Large‐scale conformational changes of the diindole functional groups could occur under external forces, endowing the thermosets with excellent toughening properties.