期刊
ACS NANO
卷 15, 期 1, 页码 1785-1794出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.0c09577
关键词
biomimetic skin; dopamine; transparent conductive hydrogel; thermoresponse; self-adhesive sensor
类别
资金
- Research Grants Council of Hong Kong [11275216, 11218417]
- Innovation and Technology Fund [9440248]
- City University of Hong Kong [9680212, 9610375]
The dopamine-triggered gelation (DTG) strategy has successfully fabricated mussel-inspired conductive, transparent hydrogels with superior performances. These hydrogels exhibit pronounced adhesion, robust elasticity, self-healing ability, injectability and 3D printability, as well as reversible and tunable transparent-opaque transition and thermoresponsive feature.
Mussel-inspired conductive hydrogels are attracfive for the development of next-generation self-adhesive, flexible skinlike sensors. However, despite extensive progress, there are still some daunting challenges that hinder their applications, such as inferior optical transparency, low catechol content (e.g., poor adhesion), as well as limited sensation performances. Here, we report a dopamine-triggered gelation (DTG) strategy for fabricating mussel-inspired, transparent, and conductive hydrogels. The DTG design leverages on the dual functions of dopamine, which serves as both polymerization initiator and dynamic mediator to elaborate and orchestrate the cross-linking networks of hydrogels, allowing for pronounced adhesion, robust elasticity, self-healing ability, excellent injectability and three-dimensional printability, reversible and tunable transparent-opaque transition, and thermoresponsive feature. These preferable performances enable DTG hydrogels as self-adhesive, flexible skinlike sensors for achieving multiple sensations toward pressure, strain, and temperature, even an extraordinary visual perception effect, making it a step closer in the exploration of future biomimetic skin.
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