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- Title
Strong, Self‐Healable, and Recyclable Visible‐Light‐Responsive Hydrogel Actuators.
- Authors
Jiang, Zhen; Tan, Ming Li; Taheri, Mahdiar; Yan, Qiao; Tsuzuki, Takuya; Gardiner, Michael G.; Diggle, Broden; Connal, Luke A.
- Abstract
The most pressing challenges for light‐driven hydrogel actuators include reliance on UV light, slow response, poor mechanical properties, and limited functionalities. Now, a supramolecular design strategy is used to address these issues. Key is the use of a benzylimine‐functionalized anthracene group, which red‐shifts the absorption into the visible region and also stabilizes the supramolecular network through π–π interactions. Acid–ether hydrogen bonds are incorporated for energy dissipation under mechanical deformation and maintaining hydrophilicity of the network. This double‐crosslinked supramolecular hydrogel developed via a simple synthesis exhibits a unique combination of high strength, rapid self‐healing, and fast visible‐light‐driven shape morphing both in the wet and dry state. As all of the interactions are dynamic, the design enables the structures to be recycled and reprogrammed into different 3D objects.
- Subjects
ACTUATORS; DEFORMATIONS (Mechanics); ENERGY dissipation; HYDROGEN bonding; HYDROGELS
- Publication
Angewandte Chemie, 2020, Vol 132, Issue 18, p7115
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201916058