A hybrid polymer gel with controlled rates of cross-link rupture and self-repair.

Journal Article (Journal Article)

A family of hybrid polymer gels is described, in which covalent cross-links create a permanent, stiff scaffold onto which reversible metal-ligand coordinative cross-links are added. The reversible metal-ligand interactions are shown to bear mechanical stress within the hybrid gel, and relaxations in response to that applied stress are consistent with the stress-free kinetics of ligand exchange in systems that model the reversible cross-links. The stress-induced dissociation of a model metal-ligand complex is examined by a single-molecule force spectroscopy, and its mechanical response is compared with a previously studied complex. The mechanical response of the individual interactions is relevant to those found in the family of hybrid gels, and the modular platform is therefore suitable for the study of stress-induced molecular dissociations, and their subsequent repair, within a macroscopic material of fixed structure.

Full Text

Duke Authors

Cited Authors

  • Kersey, FR; Loveless, DM; Craig, SL

Published Date

  • April 2007

Published In

Volume / Issue

  • 4 / 13

Start / End Page

  • 373 - 380

PubMed ID

  • 17251135

Pubmed Central ID

  • 17251135

Electronic International Standard Serial Number (EISSN)

  • 1742-5662

International Standard Serial Number (ISSN)

  • 1742-5689

Digital Object Identifier (DOI)

  • 10.1098/rsif.2006.0187

Language

  • eng