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Open AccessArticle

Mussel-Inspired Dopamine and Carbon Nanotube Leading to a Biocompatible Self-Rolling Conductive Hydrogel Film

by Junzi Jiang 1,†, Yong Huang 3,†, Yitian Wang 2, Hui Xu 2, Malcolm Xing 1,* and Wen Zhong 2,*
1
Department of Mechanical Engineering, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
2
Department of Biosystem Engineering, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
3
Chongqing Academy of Animal Sciences, Chongqing 402460, China
*
Authors to whom correspondence should be addressed.
Equally Contributing Authors.
Materials 2017, 10(8), 964; https://doi.org/10.3390/ma10080964
Received: 16 June 2017 / Revised: 10 August 2017 / Accepted: 16 August 2017 / Published: 18 August 2017
We report a novel self-rolling, conductive, and biocompatible multiwall carbon nanotube (MWCNT)-dopamine-polyethylene glycol (PEG) hydrogel film. The gel can self-fold into a thin tube when it is transferred from a glass slide to an aqueous environment, regardless of the concentrations of the MWCNT. The film presents a highly organized pattern, which results from the self-assembly of hydrophilic dopamine and hydrophobic carbon nanotubes. By exploring the biomedical potential, we found that MWCNT-included rolled film is nontoxic and can promote cell growth. For further functional verification by qPCR (quantitative polymerase chain reaction), bone marrow derived mesenchymal cells present higher levels of osteogenic differentiations in response to a higher concentration of CNTs. The results suggest that the self-rolling, conductive CNT-dopamine-PEG hydrogel could have multiple potentials, including biomedical usage and as a conductive biosensor. View Full-Text
Keywords: mussel-inspired dopamine; self-rolling film; self-assembly; carbon nanotube conductive film; cellular compatibility mussel-inspired dopamine; self-rolling film; self-assembly; carbon nanotube conductive film; cellular compatibility
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Jiang, J.; Huang, Y.; Wang, Y.; Xu, H.; Xing, M.; Zhong, W. Mussel-Inspired Dopamine and Carbon Nanotube Leading to a Biocompatible Self-Rolling Conductive Hydrogel Film. Materials 2017, 10, 964.

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