Self‐Healing, Expansion–Contraction, and Shape‐Memory Properties of a Preorganized Supramolecular Hydrogel through Host–Guest Interactions
Abstract
Supramolecular materials cross‐linked between polymer chains by noncovalent bonds have the potential to provide dynamic functions that are not produced by covalently cross‐linked polymeric materials. We focused on the formation of supramolecular polymeric materials through host–guest interactions: a powerful method for the creation of nonconventional materials. We employed two different kinds of host–guest inclusion complexes of β‐cyclodextrin (βCD) with adamantane (Ad) and ferrocene (Fc) to bind polymers together to form a supramolecular hydrogel (βCD‐Ad‐Fc gel). The βCD‐Ad‐Fc gel showed self‐healing ability when damaged and responded to redox stimuli by expansion or contraction. Moreover, the βCD‐Ad‐Fc gel showed a redox‐responsive shape‐morphing effect. We thus succeeded in deriving three functions from the introduction of two kinds of functional units into a supramolecular material.
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The above two features differ notably from common shape memory hydrogels for which shape changing kinetics is strongly affected by device dimension due to inside-and-out water diffusion.
“The above two features differ notably from common shape memory hydrogels 21-24 for which the shape changing kinetics is strongly affected by the device dimension due to the inside-and-out water diffusion 25 .”
From Shape memory polymer with programmable recovery onset (2023) · cites this paper as [24]
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“…be achieved by the hydrophobic part of hydrogels by the autonomous loading between hydrophobic structural domains/conjugation, metal–ligand coordination by the reversible chelation between ligands and metal atoms, and host–guest by combining interactions with different binding affinities [179–184].”
BackgroundStretchable supramolecular hydrogels with triple shape memory effect
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- Authors
- Miyamae, K., Nakahata, M., Takashima, Y., & Harada, A.
- Affiliations
- The University of Osaka (JP)
- Corresponding author
- Harada, Akira
- Venue
- Angewandte Chemie International Edition
- Publisher
- Wiley
- Published
- 2015-06-16
- Volume
- 54
- Issue
- 31
- Pages
- 8984-8987
- ISSN
- 1433-7851 (ISSN-L)
- 1521-3773
- OpenAlex
- W2102762320
- Cited by
- 532
- References
- 43
- Citations by year
- 2026: 17 · 2025: 26 · 2024: 31 · 2023: 44 · 2022: 42 · 2021: 48 · 2020: 71 · 2019: 82 · 2018: 63 · 2017: 56 · 2016: 43 · 2015: 9
- FWCI
- 26.04
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Angewandte Chemie International Edition (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Japan Society for the Promotion of Science (15J30006, 26288062)
- Topics
- Physical Sciences › Chemistry › Organic Chemistry › Supramolecular Chemistry and Complexes
- Physical Sciences › Materials Science › Biomaterials › Supramolecular Self-Assembly in Materials
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Medicine › Hydrogels: synthesis, properties, applications
- Keywords
- supramolecular hydrogels, host-guest interactions, β-cyclodextrin, adamantane, ferrocene, self-healing, redox-responsive materials, shape morphing, inclusion complexes, non-covalent crosslinking
- MeSH terms
- Azo Compounds, Molecular Conformation, Molecular Structure, Hydrogels
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