Activation energies control the macroscopic properties of physically cross-linked materials.
Angew Chem Int Ed Engl
; 53(38): 10038-43, 2014 Sep 15.
Article
en En
| MEDLINE
| ID: mdl-25056596
ABSTRACT
Here we show the preparation of a series of water-based physically cross-linked polymeric materials utilizing cucurbit[8]uril (CB[8]) ternary complexes displaying a range of binding, and therefore cross-linking, dynamics. We determined that the mechanical strength of these materials is correlated directly with a high energetic barrier for the dissociation of the CB[8] ternary complex cross-links, whereas facile and rapid self-healing requires a low energetic barrier to ternary complex association. The versatile CB[8] ternary complex has, therefore, proven to be a powerful asset for improving our understanding of challenging property-structure relationships in supramolecular systems and their associated influence on the bulk behavior of dynamically cross-linked materials.
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MEDLINE
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Angew Chem Int Ed Engl
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2014
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Article