Distributed Electric Field Induces Orientations of Nanosheets to Prepare Hydrogels with Elaborate Ordered Structures and Programmed Deformations

Zhu，Qing Li1; Dai，Chen Fei1; Wagner，Daniel2; Daab，Matthias2; Hong，Wei3; Breu，Josef2; Zheng，Qiang1; Wu，Zi Liang1

2020

10.1002/adma.202005567

ADVANCED MATERIALS   影响因子和分区

0935-9648

1521-4095

Living organisms use musculatures with spatially distributed anisotropic structures to actuate deformations and locomotion with fascinating functions. Replicating such structural features in artificial materials is of great significance yet remains a big challenge. Here, a facile strategy is reported to fabricate hydrogels with elaborate ordered structures of nanosheets (NSs) oriented under a distributed electric field. Multiple electrodes are distributed with various arrangements in the precursor solution containing NSs and gold nanoparticles. A complex electric field induces sophisticated orientations of the NSs that are permanently inscribed by subsequent photo-polymerization. The resultant anisotropic nanocomposite poly(N-isopropylacrylamide) hydrogels exhibit rapid deformation upon heating or photoirradiation, owing to the fast switching of permittivity of the media and electric repulsion between the NSs. The complex alignments of NSs and anisotropic shape change of discrete regions result in programmed deformation of the hydrogels into various configurations. Furthermore, locomotion is realized by a spatiotemporal light stimulation that locally triggers time-variant shape change of the composite hydrogel with complex anisotropic structures. Such a strategy on the basis of the distributed electric-field-generated ordered structures should be applicable to gels, elastomers, and thermosets loaded with other anisotropic particles or liquid crystals, for the design of biomimetic/bioinspired materials with specific functionalities.

anisotropic hydrogels distributed electrical fields electrical orientation locomotion nanosheets programmed deformations

SCI ; EI

英语

NI论文

其他

National Natural Science Foundation of China[51773179][51973189] ; Natural Science Foundation of Zhejiang Province of China[LR19E030002] ; German Science Foundation (DFG)[SFB 840]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:000581676600001

WILEY-V C H VERLAG GMBH

20204309378914

Biology ; Electric fields ; Photopolymerization ; Acrylic monomers ; Amides ; Anisotropy ; Hydrogels ; Biomimetics ; Deformation ; Gold nanoparticles

Biotechnology:461.8 ; Biology:461.9 ; Electricity: Basic Concepts and Phenomena:701.1 ; Light/Optics:741.1 ; Nanotechnology:761 ; Colloid Chemistry:801.3 ; Chemical Products Generally:804 ; Organic Compounds:804.1 ; Polymerization:815.2 ; Physical Properties of Gases, Liquids and Solids:931.2 ; Solid State Physics:933

MATERIALS SCIENCE

2-s2.0-85092699451

Scopus

1.Ministry of Education Key Laboratory of Macromolecular,Synthesis and Functionalization,Department of Polymer Science and Engineering,Zhejiang University,Hangzhou,310027,China
2.Bavarian Polymer Institute and Department of Chemistry,University of Bayreuth,Bayreuth,Universitätsstrasse 30,95440,Germany
3.Department of Mechanics and Aerospace Engineering,Southern University of Science and Technology,Shenzhen,518055,China

Zhu，Qing Li,Dai，Chen Fei,Wagner，Daniel,et al. Distributed Electric Field Induces Orientations of Nanosheets to Prepare Hydrogels with Elaborate Ordered Structures and Programmed Deformations[J]. ADVANCED MATERIALS,2020,32(47).

Zhu，Qing Li.,Dai，Chen Fei.,Wagner，Daniel.,Daab，Matthias.,Hong，Wei.,...&Wu，Zi Liang.(2020).Distributed Electric Field Induces Orientations of Nanosheets to Prepare Hydrogels with Elaborate Ordered Structures and Programmed Deformations.ADVANCED MATERIALS,32(47).

Zhu，Qing Li,et al."Distributed Electric Field Induces Orientations of Nanosheets to Prepare Hydrogels with Elaborate Ordered Structures and Programmed Deformations".ADVANCED MATERIALS 32.47(2020).