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Title: Diffusion driven layer-by-layer assembly of graphene oxide nanosheets into porous three-dimensional macrostructures.
Authors: Zou, Jianli
Kim, Franklin
Author's alias: ゾウ, ジャンリ
キム, フランクリン
Keywords: Chemical sciences
Materials science
Issue Date: 16-Oct-2014
Publisher: Nature Publishing Group
Journal title: Nature communications
Volume: 5
Thesis number: 5254
Abstract: Despite recent progress in preparing numerous types of nanosheets, it remains a difficult challenge to assemble the tiny building blocks into functional macroscale architectures suitable for practical applications. Here we introduce a diffusion driven layer-by-layer assembly process and demonstrate its application for the construction of graphene oxide sheets into various three-dimensional structures. This process involves complexation of the negatively charged graphene oxide sheets and positively charged branched polyethylenimine at a given interface. We find that the diffusion of branched polyethylenimine molecules allows the complex to continuously grow into foam-like frameworks with tunable porosities. Furthermore, the assembly process is quite robust and can be utilized in various configurations such as to create free-standing architectures with tailored shapes or patterned films on a substrate. With such useful features, we believe that this technique may serve as a valuable tool for the assembly of nanomaterials.
Description: 形状と細孔サイズを自在に変える炭素材料の開発 -多孔性3次元グラフェンナノシートの新規合成-. 京都大学プレスリリース. 2014-10-17.
Rights: © 2014 Macmillan Publishers Limited.
This is not the published version. Please cite only the published version.
DOI(Published Version): 10.1038/ncomms6254
PubMed ID: 25319602
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