Volume 57, Issue 23 pp. 6878-6882
Communication

Genetically Engineered Supercharged Polypeptide Fluids: Fast and Persistent Self-Ordering Induced by Touch

Dr. Lei Zhang

Dr. Lei Zhang

State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022 Changchun, China

Zernike Institute for Advanced Materials, Nijenborgh 4, 9747 AG Groningen, The Netherlands

Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, 266042 Qingdao, China

These authors contributed equally to this work.

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Chao Ma

Chao Ma

Zernike Institute for Advanced Materials, Nijenborgh 4, 9747 AG Groningen, The Netherlands

These authors contributed equally to this work.

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Jing Sun

Jing Sun

Zernike Institute for Advanced Materials, Nijenborgh 4, 9747 AG Groningen, The Netherlands

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Dr. Baiqi Shao

Dr. Baiqi Shao

State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022 Changchun, China

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Prof. Giuseppe Portale

Prof. Giuseppe Portale

Zernike Institute for Advanced Materials, Nijenborgh 4, 9747 AG Groningen, The Netherlands

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Prof. Dong Chen

Prof. Dong Chen

Institute of Process Equipment, College of Energy Engineering, Zhejiang University, Hangzhou, 310027 China

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Prof. Kai Liu

Corresponding Author

Prof. Kai Liu

State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022 Changchun, China

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Prof. Andreas Herrmann

Corresponding Author

Prof. Andreas Herrmann

Zernike Institute for Advanced Materials, Nijenborgh 4, 9747 AG Groningen, The Netherlands

Present address: DWI-Leibniz Institute for Interactive Materials, Forckenbeckstr. 50, 52056 Aachen, Germany

Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Worringerweg 2, 52074 Aachen, Germany

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First published: 16 April 2018
Citations: 45

Graphical Abstract

Stimuli-responsive protein fluids: A type of bio-based fluid exhibiting shear-induced phase transitions has been generated by electrostatic complexation of supercharged polypeptides with aromatic surfactants. This sensitive, fast, and persistent self-ordering behavior was exploited for water flow detection and capturing of fingerprint information by easily recordable birefringence.

Abstract

Mechanically induced disorder–order transitions have been studied in fluid surfactant solutions or polymer thermotropic liquid crystals. However, isothermally induced ordered phases do not persist after cessation of shear, which limits their technological applicability. Moreover, no such stimuli-responsive materials involving biomacromolecules have been reported although biopolymer liquids are gaining a lot of attention. A biological fluid system is introduced in which anionic polypeptides are complexed with cationic surfactants. The resulting fluids exhibited very sensitive isotropic–nematic transition triggered by shear. The formed liquid crystal was preserved after cessation of mechanical stimulus. Self-ordering behavior of the material was achieved through water flow and finger pressing. The latter mechanical induction resulted in the formation of complex pattern that can be read out by birefringence, allowing the recording of fingerprint information.

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