期刊
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
卷 181, 期 -, 页码 160-168出版社
ELSEVIER
DOI: 10.1016/j.ijbiomac.2021.03.145
关键词
Bovine serum albumin; Polypyrrole; Hybrid; Film
资金
- National Natural Science Foundation of China [51802259]
- Natural Science Foundation of Shaanxi Province [2019JQ-510]
- Xi'an and Xi'an Beilin District Programs for Science and Technology Plan [201805037YD15CG21(18), GX1913]
- Promotion Program for Youth of Shaanxi University Science and Technology Association [20190415]
- Fund of Key Laboratory of Processing and Quality Evaluation Technology of Green Plastics of China National Light Industry Council [PQETGP2019003]
- Opening Foundation of Shanxi Key Laboratory of Advanced Manufacturing Technology [XJZZ202001]
A self-adhesive BSA/PPy hybrid film was successfully developed for fabricating flexible electronic sensors with improved interfacial bonding robustness and resistance to bending cycles.
Flexible electronic sensors composed of conductive material and flexible film have attracted increasing attention in decades due to its commercial, medical and scientific value. However, the poor interfacial bonding robustness between conductive materials and flexible film influences widely practical application of sensors. It is still a great challenge to fabricate a self-adhesive conductive film. Herein, we report a freestanding and self-adhesive bovine serum albumin/polypyrrole (BSA/PPy) hybrid film at the air/water interface. It is discovered that the PPy nano particles aggregate uniformly on the BSA film that is formed by amyloid-like BSA aggregation. The BSA/PPy film was integrated with polydimethylsiloxane (PDMS) film to fabricate flexible electronic sensors. The test indicates that the BSA/PPy film-based sensor could tolerate 500 cycles of bending without the resistance performance variation. The BSA/PPy film functions as a key mediator to dynamically tune the PPy conductance in response to external pressures and strains. The sensors exhibit ability for detecting tiny acoustic vibration, real-time human motion, physiological behavior and for differentiating various breathing pattern. Our strategy may open a pathway to readily construct flexible electronic sensors toward practical applications. (c) 2021 Elsevier B.V. All rights reserved.
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