Azobenzene Based Photo-responsive Mechanical Actuator Fabricated by Intermolecular H-bond Interaction

Autor: Jishu Han, Wei-Jun Li, Ruiyang Zhao, Jia Zhao, Yun-Lei Fu, Yun-Chao Zhang, Fusheng Liu, Zhong-Cheng Zhao, Chun-Yan Yu, Jia-Hui Mu, Zi-Hao Wang
Rok vydání: 2020
Předmět:
Zdroj: Chinese Journal of Polymer Science. 39:417-424
ISSN: 1439-6203
0256-7679
DOI: 10.1007/s10118-021-2504-4
Popis: Photo-responsive mechanical actuator is a class of stimuli-responsive materials transferring light to mechanical energy through macroscopic transformation. To fabricate photo-responsive mechanical actuator, soft polymeric materials crosslinked with functional bridging structures are desired. Supramolecular interaction is a relatively common way to fabricate crosslinked materials due to its excellent self-assembly performance. And azobenzene and derivatives are ideal candidates of photo-responsive materials because of the unique photo-induced trans-cis isomerization. Here, a new kind of crosslinked materials based on supramolecular interaction between 4,4′-dihydroxyazobenzene and chitosan is reported. Under 355 nm irradiation, the macroscopic bending of polymeric materials occurs rapidly due to the photo-isomerization of 4,4′-dihydroxyazobenzene. Meanwhile, the photo-responsive mechanical actuator can also lift weight which is up to 200 times that of the actuator itself, and convert energy from light to mechanical work efficiently. This report suggests a new kind of photo-responsive actuator based on supramolecular interaction and may be helpful to contribute a theoretical basis to the design and synthesis of photo-responsive mechanical actuator suitable for large-scale manufacturing industrialization in future.
Databáze: OpenAIRE
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