Dual-Encryption in a Shape-Memory Hydrogel with Tunable Fluorescence and Reconfigurable Architecture

Zhu, Chao Nan1; Bai, Tianwen1; Wang, Hu2; Ling, Jun1; Huang, Feihe2; Hong, Wei3; Zheng, Qiang1; Wu, Zi Liang1

2021-06-01

10.1002/adma.202102023

ADVANCED MATERIALS   影响因子和分区

0935-9648

1521-4095

Materials capable of shape-morphing and/or fluorescence imaging have practical significances in the fields of anti-counterfeiting, information display, and information protection. However, it's challenging to realize these functions in hydrogels due to the poor mechanical properties and lack of tunable fluorescence. A tough hydrogel with good shape-memory ability and phototunable fluorescence is reported here, which affords reprogrammable shape designing and information encoding for dual-encryption. This hydrogel is prepared by incorporating donor-acceptor chromophore units into a poly(1-vinylimidazole-co-methacrylic acid) network, in which the dense intra- and interchain hydrogen bonds lead to desirable features including high stiffness, high toughness, and temperature-mediated shape-memory property. Additionally, the hydrogel shows photomediated tunable fluorescence through a unimer-to-dimer transformation of the chromophores. By combining photolithography and origami/kirigami designs, hydrogel sheets encoded with fluorescent patterns can deform into specific 3D configurations. The geometrically encrypted fluorescent information in the architected hydrogels is readable only after sequential shape recovery and UV light irradiation. As demonstrated by proof-of-concept experiments, both the fluorescent pattern and the 3D configuration are reprogrammable, facilitating repeated information protection and display. The design of tough hydrogels with rewritable fluorescent patterns and reconfigurable shapes should guide the future development of smart materials with improved security and wider applications in aqueous environments.

fluorescence information encryption origami/kirigami shape memory tough hydrogels

SCI ; EI

英语

NI论文 ; ESI高被引

其他

National Natural Science Foundation of China[51773179,51973189] ; Natural Science Foundation of Zhejiang Province of China[LR19E030002]

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

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

WOS:000657390800001

WILEY-V C H VERLAG GMBH

20212310453455

Chromophores ; Fluorescence imaging ; Hydrogels ; Hydrogen bonds ; Reconfigurable architectures ; Shape memory effect ; Shape optimization

Computer Systems and Equipment:722 ; Physical Chemistry:801.4 ; Chemical Products Generally:804 ; Organic Compounds:804.1 ; Optimization Techniques:921.5 ; Materials Science:951

MATERIALS SCIENCE

Web of Science

1.Zhejiang Univ, Dept Polymer Sci & Engn, Minist Educ, Key Lab Macromol Synth & Functionalizat, Hangzhou 310027, Peoples R China
2.Zhejiang Univ, Dept Chem, Ctr Chem High Performance & Novel Mat, State Key Lab Chem Engn, Hangzhou 310027, Peoples R China
3.Southern Univ Sci & Technol, Dept Mech & Aerosp Engn, Shenzhen 518055, Peoples R China

Zhu, Chao Nan,Bai, Tianwen,Wang, Hu,et al. Dual-Encryption in a Shape-Memory Hydrogel with Tunable Fluorescence and Reconfigurable Architecture[J]. ADVANCED MATERIALS,2021,33.

Zhu, Chao Nan.,Bai, Tianwen.,Wang, Hu.,Ling, Jun.,Huang, Feihe.,...&Wu, Zi Liang.(2021).Dual-Encryption in a Shape-Memory Hydrogel with Tunable Fluorescence and Reconfigurable Architecture.ADVANCED MATERIALS,33.

Zhu, Chao Nan,et al."Dual-Encryption in a Shape-Memory Hydrogel with Tunable Fluorescence and Reconfigurable Architecture".ADVANCED MATERIALS 33(2021).