偶氮苯
材料科学
执行机构
异构化
超分子化学
分子间力
机械能
纳米技术
光异构化
聚合物
复合材料
分子
化学
计算机科学
有机化学
功率(物理)
催化作用
人工智能
物理
量子力学
作者
Chunyan Yu,Jiahui Mu,Yunlei Fu,Yun-Chao Zhang,Jishu Han,Ruiyang Zhao,Jia Zhao,Zi-Hao Wang,Zhong-Cheng Zhao,Weijun Li,Fusheng Liu
标识
DOI:10.1007/s10118-021-2504-4
摘要
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.
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