Fig. 4. (a) Combination of disulfide exchange and hydrogen bonds, leading to vitrimer materials with strong viscosity-temperature dependence. Adapted from ref. 42 with permission from the Royal Society of Chemistry. (b) Schematic representation of vitrimer networks with dual cross-links composed of dynamic boronic ester bonds and non-covalent sacrificial Zn2+–O coordination bonds. Adapted with permission from ref. 45. Copyright 2019 American Chemical Society.
