金ナノチューブ膜における電調分子輸送

Sang Bok Lee¹, Charles R Martin

¹Department of Chemistry, Center for Research at the Bio/Nano Interface, University of Florida, Gainesville, FL 32611-7200, USA.

Journal of the American Chemical Society

|October 3, 2002

まとめ

研究者らは,制御された分子輸送のために,金ナノチューブを使った合成膜を作成した. 電気的電位を適用すると,膜は逆転的に切り替わります.

科学分野:

マテリアルサイエンス材料科学
ナノテクノロジーナノテクノロジー
電気化学電気化学について

背景:

合成膜は制御された輸送を可能にします.
ゴールドナノチューブは,ナノスケールの導管を提供する.
輸送の電気調節は新興分野である.

研究の目的:

合成膜を介して中性分子輸送を電調化する方法を開発する.
調節可能な分子輸送のために金ナノチューブを使用する.
膜特性を制御するアニオンの表面活性物質の役割を調査する.

主な方法:

単分散金 (Au) ナノチューブ (<1 nm内径) を埋め込んだ合成膜の製造.
Auナノチューブの膜に電気的電位を適用する.
アニオンの表面活性物質を用いて,ナノチューブの排水性を変化させる.
膜を横断する中性水嫌性の分子の輸送を監視する.

主要な成果:

金ナノチューブは,分子とイオン輸送のための導管を提供します.
陽性ポテンシャルによって誘発されるアニオン表面活性剤の吸収は,ナノチューブの内部を水性にする.
水嫌性分子輸送は,ナノチューブが水嫌性であるときに強化されます.
負のポテンシャルは表面活性物質を排出し,より水友的な状態を回復し,輸送を調節します.

結論:

Auナノチューブ膜を用いた中性分子輸送の可逆電調節のための新しい方法が実証されました.
このシステムは,電気的手段によって,水害性分子の通過を調節可能な制御を可能にします.
この技術は,分離,感知,制御解離システムにおける応用の可能性を秘めています.

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