Water-Content-Dependent Switching of the Bending Behavior of Photoresponsive Hydrogels Composed of Hydrophilic Acrylamide-Based Main Chains and Hydrophobic Azobenzene
Abstract
:1. Introduction
2. Results and Discussion
2.1. Preparation of Moisture-Sensitive Photoresponsive Hydrogels
2.2. Photoresponsiveness of Hydrogels in Different Moisture Environments on the Molecular Scale
2.3. Photoresponsiveness of Hydrogels in Different Moisture Environments at the Macro Scale
2.4. Structural Studies of Photoresponsive Hydrogels by X-ray Scattering Measurements
2.5. Proposed Bending Mechanism in Response to Water Content
3. Conclusions
4. Materials and Methods
4.1. Materials
4.2. Methods
4.3. Preparation of PR-Azo
4.4. Preparation of PACMO-Azo(sol)
4.5. Preparation of PDMAA-Azo(sol)
4.6. Preparation of PDEAA-Azo(sol)
Supplementary Materials
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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R | ktrans→cis/s−1 | kcis→trans/s−1 |
---|---|---|
ACMO | 9.0 ± 3.2 × 10−3 | 3.4 ± 1.2 × 10−3 |
DMAA | 1.1 ± 0.66 × 10−2 | 3.6 ± 0.88 × 10−3 |
DEAA | 1.3 ± 1.0 × 10−2 | 4.4 ± 1.7 × 10−3 |
R | ktrans→cis/s−1 | kcis→trans/s−1 |
---|---|---|
ACMO | 9.4 ± 2.0 × 10−3 | 6.4 ± 1.3 × 10−3 |
DMAA | 1.3 ± 0.30 × 10−2 | 6.1 ± 2.3 × 10−3 |
DEAA | 1.9 ± 1.0 × 10−2 | 6.2 ± 2.1 × 10−3 |
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Park, J.; Shimizu, Y.; Zhou, X.; Ikura, R.; Matsuba, G.; Takashima, Y. Water-Content-Dependent Switching of the Bending Behavior of Photoresponsive Hydrogels Composed of Hydrophilic Acrylamide-Based Main Chains and Hydrophobic Azobenzene. Gels 2023, 9, 658. https://doi.org/10.3390/gels9080658
Park J, Shimizu Y, Zhou X, Ikura R, Matsuba G, Takashima Y. Water-Content-Dependent Switching of the Bending Behavior of Photoresponsive Hydrogels Composed of Hydrophilic Acrylamide-Based Main Chains and Hydrophobic Azobenzene. Gels. 2023; 9(8):658. https://doi.org/10.3390/gels9080658
Chicago/Turabian StylePark, Junsu, Yuki Shimizu, Xin Zhou, Ryohei Ikura, Go Matsuba, and Yoshinori Takashima. 2023. "Water-Content-Dependent Switching of the Bending Behavior of Photoresponsive Hydrogels Composed of Hydrophilic Acrylamide-Based Main Chains and Hydrophobic Azobenzene" Gels 9, no. 8: 658. https://doi.org/10.3390/gels9080658