Abstract
Stimuli-responsive hydrogels undergo shape transformation in response to change in ambient environment and have potential applications in tissue engineering, robotics, actuator and biosensing. Generally, the Stimuli-responsive hydrogels are controlled by unique external stimuli and the response is also specific. Here, we developed redox-regulated and temperature responsive macroscopic gel assembly system, using polyacrylamide-based hydrogel, which was functionalized with ferrocene (Fc) as a guest hydrogel and poly(N-isopropylacrylamide) (PNIPAAm) gel modified with β-cyclodextrin as a host hydrogel. It was observed that the variations in the redox potential induced reversible assembly/dissociation transition in a bi-gel strip and optimization of βCD contents provided fast bending speed and large bending degree, which can be applied to develop temperature sensitive switch.
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Acknowledgments
Financial support by National Natural Science Foundation of China (21272210, 21372200, 21472168, 21411130187), International Science and Technology Cooperation Project of Ministry Science and Technology of China (2009 DFR 40640), Science and Technology Program of Zhejiang Province (2013C24001), and Science and Technology Innovation Team of Ningbo (2011B82002), the Fundamental Research Funds for the Central Universities are gratefully acknowledged. We acknowledge Chunxin Ma, doctoral student in Zhejiang University for his help in the experiment.
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Tong, R., Wang, L., Yu, H. et al. Redox and Temperature Dual Responsive Gel Based on Host–Guest Assembly. J Inorg Organomet Polym 25, 1053–1059 (2015). https://doi.org/10.1007/s10904-015-0210-9
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DOI: https://doi.org/10.1007/s10904-015-0210-9