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

作　　者：Chun-Yan Yu Jia-Hui Mu Yun-Lei Fu Yun-Chao Zhang Ji-Shu Han Rui-Yang Zhao Jia Zhao Zi-Hao Wang Zhong-Cheng Zhao Wei-Jun Li Fu-Sheng Liu 

机构地区：[1]State Key Laboratory Base of Eco-chemical Engineering,College of Chemical Engineering,Qingdao University of Science and Technology,Qingdao 266042,China [2]Taishan Scholar Advantage and Characteristic Discipline Team of Eco Chemical Process and Technology,College of Chemistry and Molecular Engineering,Qingdao University of Science and Technology,Qingdao 266042,China [3]State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology,College of Chemical Engineering,Zhejiang University of Technology,Hangzhou 310014,China

出　　处：《Chinese Journal of Polymer Science》2021年第4期417-424,I0005,共9页高分子科学（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.51703112,51673106);Natural Science Foundation of Shandong Province(Nos.ZR2017BEM040,ZR2016BQ28);Open Fund of the State Key Laboratory of Luminescent Materials and Devices(No.2017-skllmd-10,South China University of Technology);China Postdoctoral Science Foundation(No.2017M622152).

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.

关 键 词：Photo-response Supramolecular interaction Mechanical actuator AZOBENZENE Energy conversion 

分 类 号：TB381[一般工业技术—材料科学与工程] O641.3[理学—物理化学]