Optically healable supramolecular polymers

By Mark Burnworth, Liming Tang, Justin R. Kumpfer, Andrew J E Duncan, F. Beyer, Gina L. Fiore, S. Rowan, Christoph Weder. Nature, 2011

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How researchers see this paper

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A highly stretchable autonomous self-healing elastomer. (2016, positive): “Previous work that involved metal – ligand interactions for self-healing materials either relied on strong bonds, which required an external stimulus for healing 4,16 – 20 , or weak bonds, which could not provide suf ﬁ cient mechanical strength 21,22 .”
Self-healing polymer nanocomposite materials: A review (2015, neutral): “The re- formation of chemical bonds in intr ins c materials is triggered by a number of external stimuli including pH change, light, temperature, pr essu e, or oxygen to name a few [10, 38-42, 48-55].”
Vitrimers: Permanently crosslinked polymers with dynamic network topology (2020, background): “interactions[23] and metal complexation.[24] These interactions are described by a thermodynamic equilibrium constant K, which dictates the equilibrium between the associated and the dissociated forms and therefore the connectivity of the system.”
Shape memory polymers for composites (2018, background): “Generally, self-healing is based on a reversible physical effect, that is, expansion occurring near a crack, or on reversible bonds, including reversible covalent bonds [155,156], ionic bonds [157], metal coordinate bonds [158,159] and supramolecular interactions [160,161].”