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Redox-responsive self-healing materials formed from host-guest polymers.

ABSTRACT: Expanding the useful lifespan of materials is becoming highly desirable, and self-healing and self-repairing materials may become valuable commodities. The formation of supramolecular materials through host-guest interactions is a powerful method to create non-conventional materials. Here we report the formation of supramolecular hydrogels and their redox-responsive and self-healing properties due to host-guest interactions. We employ cyclodextrin (CD) as a host molecule because it is environmentally benign and has diverse applications. A transparent supramolecular hydrogel quickly forms upon mixing poly(acrylic acid) (pAA) possessing ?-CD as a host polymer with pAA possessing ferrocene as a guest polymer. Redox stimuli induce a sol-gel phase transition in the supramolecular hydrogel and can control self-healing properties such as re-adhesion between cut surfaces.

SUBMITTER: Nakahata M

PROVIDER: S-EPMC3207205 | biostudies-literature | 2011 Oct

REPOSITORIES: biostudies-literature

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Redox-responsive self-healing materials formed from host-guest polymers.

Nakahata Masaki M Takashima Yoshinori Y Yamaguchi Hiroyasu H Harada Akira A

Nature communications 20111025

Expanding the useful lifespan of materials is becoming highly desirable, and self-healing and self-repairing materials may become valuable commodities. The formation of supramolecular materials through host-guest interactions is a powerful method to create non-conventional materials. Here we report the formation of supramolecular hydrogels and their redox-responsive and self-healing properties due to host-guest interactions. We employ cyclodextrin (CD) as a host molecule because it is environmen ...[more]

PMID: 22027591

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