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

Author

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  • Masaki Nakahata

    (Graduate School of Science, Osaka University, Machikaneyama 1-1, Toyonaka, Osaka 560-0043, Japan.)

  • Yoshinori Takashima

    (Graduate School of Science, Osaka University, Machikaneyama 1-1, Toyonaka, Osaka 560-0043, Japan.)

  • Hiroyasu Yamaguchi

    (Graduate School of Science, Osaka University, Machikaneyama 1-1, Toyonaka, Osaka 560-0043, Japan.)

  • Akira Harada

    (Graduate School of Science, Osaka University, Machikaneyama 1-1, Toyonaka, Osaka 560-0043, Japan.)

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 β-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.

Suggested Citation

  • Masaki Nakahata & Yoshinori Takashima & Hiroyasu Yamaguchi & Akira Harada, 2011. "Redox-responsive self-healing materials formed from host–guest polymers," Nature Communications, Nature, vol. 2(1), pages 1-6, September.
    • Handle: RePEc:nat:natcom:v:2:y:2011:i:1:d:10.1038_ncomms1521
    DOI: 10.1038/ncomms1521
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    Cited by:

    1. Fanlong Meng & Mohand O. Saed & Eugene M. Terentjev, 2022. "Rheology of vitrimers," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
    2. Wu, Yining & Yan, Xiang & Huang, Yongping & Zhao, Mingwei & Zhang, Liyuan & Dai, Caili, 2024. "Ultra-deep reservoirs gel fracturing fluid with stepwise reinforcement network from supramolecular force to chemical crosslinking," Energy, Elsevier, vol. 293(C).

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