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Actuating Supramolecular Shape Memorized Hydrogel Toward Programmable Shape Deformation
Author(s) -
Lu Huanhuan,
Wu Baoyi,
Yang Xuxu,
Zhang Jiawei,
Jian Yukun,
Yan Huizhen,
Zhang Dachuan,
Xue Qunji,
Chen Tao
Publication year - 2020
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.202005461
Subject(s) - materials science , actuator , shape memory alloy , bilayer , nanotechnology , bionics , fabrication , deformation (meteorology) , smart material , biomimetics , shape change , supramolecular chemistry , artificial muscle , self healing hydrogels , composite material , computer science , membrane , molecule , artificial intelligence , biophysics , chemistry , polymer chemistry , medicine , biochemistry , alternative medicine , organic chemistry , pathology , biology
Inspired by nature, diverse biomimetic hydrogel actuators are fabricated and become one of the most essential components of bionics research. Usually, the anisotropic structure of a hydrogel actuator is generated at the early fabrication process, only a specific shape transformation behavior can be produced under external stimuli, and thus has limited the development of hydrogel actuators toward the biomimetic shape deformation behavior. Herein, a novel bilayer hydrogel having a thermoresponsive actuating layer and a metal ion‐responsive memorizing layer is proposed, therefore, a 2D hydrogel film can be fixed into various 3D shapes via supramolecular metal‐ligand coordination, with further realizing programmable 4D shape deformation under the stimulus of temperature. By manipulating the temporary shapes via shape memory behavior, various temporary anisotropic structures can be obtained via the bilayer hydrogel, thus producing diverse reversible shape deformation performances, which is expected to promote the development of intelligent polymeric materials.