This title appears in the Scientific Report :
2020
Please use the identifier:
http://dx.doi.org/10.1002/adfm.201910387 in citations.
Please use the identifier: http://hdl.handle.net/2128/26616 in citations.
Redox‐Active Iron‐Citrate Complex Regulated Robust Coating‐Free Hydrogel Microfiber Net with High Environmental Tolerance and Sensitivity
Redox‐Active Iron‐Citrate Complex Regulated Robust Coating‐Free Hydrogel Microfiber Net with High Environmental Tolerance and Sensitivity
Stretchable hydrogel microfibers as a novel type of ionic conductors are promising in gaining skin‐like sensing applications in more diverse scenarios. However, it remains a great challenge to fabricate coating‐free but water‐retaining conductive hydrogel microfibers with a good balance of spinnabil...
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Personal Name(s): | Ju, Min |
---|---|
Wu, Baohu / Sun, Shengtong (Corresponding author) / Wu, Peiyi (Corresponding author) | |
Contributing Institute: |
Heinz Maier-Leibnitz Zentrum; MLZ Streumethoden; JCNS-2 Neutronenstreuung; JCNS-1 JCNS-FRM-II; JCNS-FRM-II |
Published in: | Advanced functional materials, 30 (2020) 14, S. 1910387 |
Imprint: |
Weinheim
Wiley-VCH
2020
|
DOI: |
10.1002/adfm.201910387 |
Document Type: |
Journal Article |
Research Program: |
FRM II / MLZ Jülich Centre for Neutron Research (JCNS) Soft Matter, Health and Life Sciences |
Subject (ZB): | |
Link: |
Restricted Published on 2020-02-16. Available in OpenAccess from 2021-02-16. Restricted |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/26616 in citations.
Stretchable hydrogel microfibers as a novel type of ionic conductors are promising in gaining skin‐like sensing applications in more diverse scenarios. However, it remains a great challenge to fabricate coating‐free but water‐retaining conductive hydrogel microfibers with a good balance of spinnability and mechanical strength. Here the old yet significant redox chemistry of Fe‐citrate complex is employed to solve this issue in the continuous draw‐spinning process of poly(acrylamide‐co‐sodium acrylate) hydrogel microfibers and microfiber nets from a water/glycerol solution. The resultant microfibers are ionically conductive, highly stretchable, and uniform with tunable diameters. Furthermore, the presence of redox‐reversible Fe‐citrate complex and glycerol endows the fibers with good anti‐freezing, water‐retaining, and environmentally intelligent properties. Humidity and UV light can finely mediate the stiffness of hydrogel microfibers; conversely, the ionic conductance of microfibers is also responsive to light, humidity, and strain, which enables the highly sensitive perception of environmental changes. The present draw‐spinning strategy provides more possibilities for coating‐free conductive hydrogel microfibers with a variety of responsive and sensing applications. |