Abstract
The highly reversible photo-isomerization speed and efficiency of azobenzene make photomechanical polymers come true. While how to amplify the impact of molecular photo-isomerization upon the polymers to realize macro-motions remains a long way. Here we prepared a multi-stimuli-responsive supramolecular actuator via introducing slide-ring cross-linkers of azobenzene-cyclodextrin into polyacrylamide network. The result gel showed extremely quick response to various stimuli especially light even without solvent. Attributing to the slide-ring crosslinkers in the structure, the bending angle of CD-Azo gel reached to 40.0°within 0.5 s toward 365 nm light resource. In addition, overcoming the mechanical weakness of stimuli-sensitive hydrogel, the solvent-free polymer film exhibited high tensile strength of 15.00 MPa, elongation at breaking limit of 150% and Young's modulus of 0.34 MPa.
| Original language | English |
|---|---|
| Article number | 110120 |
| Journal | Dyes and Pigments |
| Volume | 200 |
| DOIs | |
| State | Published - Apr 2022 |
Keywords
- Host-guest interaction
- Photo-responsive hydrogel
- Slide-ring
- Supramolecular actuator
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