Volume 59, Issue 12 pp. 4830-4834
Communication

Biomimetic Strain-Stiffening Self-Assembled Hydrogels

Prof. Yiming Wang

Prof. Yiming Wang

State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, 200237 Shanghai, China

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Prof. Zhi Xu

Prof. Zhi Xu

State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, 200237 Shanghai, China

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Dr. Matija Lovrak

Dr. Matija Lovrak

Department of Chemical Engineering, Delft University of Technology, van der Maasweg 9, 2629 HZ Delft, The Netherlands

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Vincent A. A. le Sage

Vincent A. A. le Sage

Department of Chemical Engineering, Delft University of Technology, van der Maasweg 9, 2629 HZ Delft, The Netherlands

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Dr. Kai Zhang

Dr. Kai Zhang

Department of Chemical Engineering, Delft University of Technology, van der Maasweg 9, 2629 HZ Delft, The Netherlands

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Prof. Xuhong Guo

Prof. Xuhong Guo

State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Meilong Road 130, 200237 Shanghai, China

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Dr. Rienk Eelkema

Dr. Rienk Eelkema

Department of Chemical Engineering, Delft University of Technology, van der Maasweg 9, 2629 HZ Delft, The Netherlands

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Dr. Eduardo Mendes

Dr. Eduardo Mendes

Department of Chemical Engineering, Delft University of Technology, van der Maasweg 9, 2629 HZ Delft, The Netherlands

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Prof. Jan H. van Esch

Corresponding Author

Prof. Jan H. van Esch

Department of Chemical Engineering, Delft University of Technology, van der Maasweg 9, 2629 HZ Delft, The Netherlands

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First published: 07 January 2020
Citations: 60

Graphical Abstract

Biomimetic strain-stiffening hydrogels have been prepared through the self-assembly of molecular gelators. On the basis of orthogonal self-assembly of the molecular gelators and lipids, hydrogel networks embedded with liposomes are formed and show strain-stiffening behavior as well, resembling both the structures and mechanical responsiveness of biological tissue.

Abstract

Supramolecular structures with strain-stiffening properties are ubiquitous in nature but remain rare in the lab. Herein, we report on strain-stiffening supramolecular hydrogels that are entirely produced through the self-assembly of synthetic molecular gelators. The involved gelators self-assemble into semi-flexible fibers, which thereby crosslink into hydrogels. Interestingly, these hydrogels are capable of stiffening in response to applied stress, resembling biological intermediate filaments system. Furthermore, strain-stiffening hydrogel networks embedded with liposomes are constructed through orthogonal self-assembly of gelators and phospholipids, mimicking biological tissues in both architecture and mechanical properties. This work furthers the development of biomimetic soft materials with mechanical responsiveness and presents potentially enticing applications in diverse fields, such as tissue engineering, artificial life, and strain sensors.

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