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タイトル: | Diffusion driven layer-by-layer assembly of graphene oxide nanosheets into porous three-dimensional macrostructures. |
著者: | Zou, Jianli Kim, Franklin |
著者名の別形: | ゾウ, ジャンリ キム, フランクリン |
キーワード: | Chemical sciences Materials science Nanotechnology |
発行日: | 16-Oct-2014 |
出版者: | Nature Publishing Group |
誌名: | Nature communications |
巻: | 5 |
論文番号: | 5254 |
抄録: | 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. |
記述: | 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. |
著作権等: | © 2014 Macmillan Publishers Limited. 許諾条件により本文は2015-04-17に公開. This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 |
URI: | http://hdl.handle.net/2433/191018 |
DOI(出版社版): | 10.1038/ncomms6254 |
PubMed ID: | 25319602 |
関連リンク: | https://www.kyoto-u.ac.jp/ja/research-news/2014-10-17 |
出現コレクション: | 学術雑誌掲載論文等 |
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