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Nanomaterials 2015, 5(1), 270-283; doi:10.3390/nano5010270

DNA-Assisted Solubilization of Carbon Nanotubes and Construction of DNA-MWCNT Cross-Linked Hybrid Hydrogels

1
Graduate School of Environmental Studies, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
2
Department of Polymer Science, Faculty of Chemistry, Moscow State University, Moscow 119899, Russia
*
Author to whom correspondence should be addressed.
Academic Editor: Thomas Nann
Received: 22 December 2014 / Revised: 14 January 2015 / Accepted: 25 February 2015 / Published: 3 March 2015
(This article belongs to the Special Issue Frontiers in Nucleic Acid Nanotechnology)
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Abstract

A simple method for preparation of DNA-carbon nanotubes hybrid hydrogel based on a two-step procedure including: (i) solubilization of multi-walled carbon nanotubes (MWCNT) in aqueous solution of DNA, and (ii) chemical cross-linking between solubilized MWCNT via adsorbed DNA and free DNA by ethylene glycol diglycidyl ether is reported. We show that there exists a critical concentration of MWCNT below which a homogeneous dispersion of MWCNT in hybrid hydrogel can be achieved, while at higher concentrations of MWCNT the aggregation of MWCNT inside hydrogel occurs. The strengthening effect of carbon nanotube in the process of hydrogel shrinking in solutions with high salt concentration was demonstrated and significant passivation of MWCNT adsorption properties towards low-molecular-weight aromatic binders due to DNA adsorption on MWCNT surface was revealed. View Full-Text
Keywords: DNA; hydrogel; carbon nanotube; multi-walled carbon nanotubes (MWCNT); hybrid hydrogel DNA; hydrogel; carbon nanotube; multi-walled carbon nanotubes (MWCNT); hybrid hydrogel
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Zinchenko, A.; Taki, Y.; Sergeyev, V.G.; Murata, S. DNA-Assisted Solubilization of Carbon Nanotubes and Construction of DNA-MWCNT Cross-Linked Hybrid Hydrogels. Nanomaterials 2015, 5, 270-283.

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