Activation Energies Control the Macroscopic Properties of Physically Cross‐Linked Materials1. (23rd July 2014)

• Record Type: Journal Article
• Authors: Appel, Eric A.; Forster, Rebecca A.; Koutsioubas, Alexandros; Toprakcioglu, Chris; Scherman, Oren A.
• Is Part Of: Angewandte Chemie. Volume 126:Number 38(2014)
• Page Start: 10202
• Page End: 10207
• Publication Date: 2014-07-23
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.201403192
• Languages: English
• ISSNs: 0044-8249

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>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.</p> </abstract>