Supramolecular polymer networks dynamics

Craig and coworkers also used metallopincer complexes to form supramolecular polymer networks [143, 144]. In their work, poly(4-vinylpyridine)s were synthesized and subsequently cross-linked by addition of small-molecule bifunctional palladium(II) or platinum(II) N,C,N-pincevs in dimethyl sulfoxide. With this approach, the authors were able to control the dynamic mechanical properties of the gels, as discussed in detail in the Sect. 2.3. 

Microcrack formation and crack propagatiOTi are a common cause of material failure. To overcome this problem, supramolecular polymer networks have been developed that can self-heal on the basis of the dynamic nature of their reversible cross-links [268]. The healing can either occur in an autonomous fashion or upmi exposure to an external stimulus such as heat, light, pressure, or mechanical stress. 

Hackelbusch S, Rossow T, van Assenbergh P, Seiffert S (2013) Chain dynamics in supramolecular polymer networks. Macromolecules 46(15) 6273-6286... 

Keywords Adaptive chemistry Dynamic networks Dynamic polymers Molecular recognition Multiple dynamics Self-organization Supramolecular chemistry... 

Keywords Supramolecular polymer gels Stimuli-responsive materials Noncovalent interactions Supramolecular network dynamics Self-assembly... 

Mechanochemical transduction aided by sonication can also be achieved at a supramolecular level. Given the dynamic character (self-assembly and disassembly) of non-covalent interactions, reversible transformations to create new responsive polymers may potentially be accomplished. As shown in Fig. 16, a cross-linked network containing a europium(III) salt undergoes metal-ligand dissociation upon... 

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