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Issue 20, 2020
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Readily producing a Silly Putty-like hydrogel with good self-healing, conductive and photothermal conversion properties based on dynamic coordinate bonds and hydrogen bonds

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Abstract

Silly Putty-like material with tunable mechanical properties, unique rheological behavior and recyclable molding ability has emerged as a promising material for wide-spread use in bionic robots, energy storage and intelligent monitoring devices. To overcome the common heterogeneous aggregation or phase separation problems relating to traditional Silly Putty-like materials, a simple method is proposed here to produce a hydrogel with good self-healing, conductivity and photothermal conversion properties based on dynamic metal–ligand interactions and hydrogen bonds by simply mixing phytate polyvinyl alcohol, pyrrole and Fe3+. The introduction of coordinate bonds endowed the hybrid hydrogel with special rheological behaviors, such as solid–liquid like and shear-thinning properties, which would enable the use of injectable techniques and remolding processing for the Silly Putty-like hydrogel. Moreover, due to a wide range of light absorption by the black conductive polymer, the hydrogel also had a good photothermal conversion capacity, so could be useful for reliable photothermal imaging, portable photothermal therapy or sensitive temperature sensing applications. Combined with previous properties, this hydrogel may play a potential role in electronics manufacturing, medical testing and therapy.

Graphical abstract: Readily producing a Silly Putty-like hydrogel with good self-healing, conductive and photothermal conversion properties based on dynamic coordinate bonds and hydrogen bonds

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Article information


Submitted
17 Feb 2020
Accepted
05 Apr 2020
First published
06 Apr 2020

J. Mater. Chem. C, 2020,8, 6763-6770
Article type
Paper

Readily producing a Silly Putty-like hydrogel with good self-healing, conductive and photothermal conversion properties based on dynamic coordinate bonds and hydrogen bonds

S. Zhang, B. Xu, X. Lu, L. Wang, Y. Li, N. Ma, H. Wei, X. Zhang and G. Wang, J. Mater. Chem. C, 2020, 8, 6763
DOI: 10.1039/D0TC00814A

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