Viscoelastic Supramolecular Networks Based on Guanidinium‐Oxyanion Interactions

ABSTRACT We describe the synthesis and characterization of supramolecular networks based on charge‐assisted hydrogen bonding interactions of guanidinium and oxyanion functionalities. Although they are constructed entirely of small‐molecule components, these materials display properties such as a glass transition and time‐ and temperature‐dependent viscoelastic rheological behavior. These properties can be tuned by the choice of each network component: T g varies by over 50°C in the studied networks, and relaxation times scaled with changes to T g . However, these supramolecular materials are inherently degradable and thermally reversible as no covalent macromolecular structure is formed.