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Near‐Infrared Light‐Driven Shape‐Morphing of Programmable Anisotropic Hydrogels Enabled by MXene Nanosheets
Author(s) -
Xue Pan,
Bisoyi Hari Krishna,
Chen Yuanhao,
Zeng Hao,
Yang Jiajia,
Yang Xiao,
Lv Pengfei,
Zhang Xinmu,
Priimagi Arri,
Wang Ling,
Xu Xinhua,
Li Quan
Publication year - 2021
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.202014533
Subject(s) - morphing , materials science , self healing hydrogels , actuator , anisotropy , smart material , electric field , electrode , optoelectronics , photopolymer , nanotechnology , computer science , optics , composite material , polymer chemistry , polymerization , chemistry , physics , polymer , quantum mechanics , artificial intelligence , computer vision
Abstract Herein, we report near‐infrared (NIR) light‐driven shape‐morphing of programmable MXene‐containing anisotropic hydrogel actuators that are fabricated through in situ free‐radical copolymerization of a judiciously designed MXene nanomonomer with thermosensitive hydrogel network. A low electric field (few V mm −1 ) was found to enable a spatial distribution of MXene nanosheets and hence introduce anisotropy into the hydrogel network. Programmable anisotropic hydrogel actuators were developed by controlling ITO electrode pattern, direct‐current (DC) electric field direction and mask‐assisted photopolymerization. As a proof‐of‐concept, we demonstrate NIR light‐driven shape morphing of the MXene‐containing anisotropic hydrogel into various shapes and devise a four‐arm soft gripper that can perform distinct photomechanical functions such as grasping, lifting/lowering down and releasing an object upon sequential NIR light exposure.