段階的な"クリック"化学によって合成された結合分子ワイヤの長さ依存伝導性は,段階的に"クリック"化学によって合成されます

Liang Luo¹, C Daniel Frisbie

¹Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, USA.

Journal of the American Chemical Society

|June 17, 2010

まとめ

クリック化学を使って,長さ10nmまでの結合分子ワイヤを作成しました. 電気測定により,4~5nm間のトンネリングからホッピング・トランスポートへの移行が明らかになった.

科学分野:

分子電子は分子電子である.
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

背景:

結合された分子線は,ナノスケールの電子機器に不可欠です.
分子ワイヤの電荷輸送メカニズムを理解することは,その応用の鍵です.

研究の目的:

異なる長さの結合オリゴフェニルネトリアゾール (OPT) ワイヤーを準備し,電気的に特徴づけます.
OPTワイヤの電荷輸送メカニズムを調査する.
分子ワイヤの製造のための効率的な方法として,クリック化学を確立する.

主な方法:

金基板にCu ((I)) 触媒化されたアジドアルキンサイクル添加を用いてOPTワイヤの合成.
直流 (DC) 輸送測定を用いた電気的特徴付け.
RAIRS,エリプソメトリー,XPSを用いた表面の特徴化.

主要な成果:

10nmまでの長さでOPTワイヤを成功裏に準備しました.
トンネリングからジャンプ輸送への移行が4〜5nmの長さ範囲で観察されました.
分子ワイヤの自己組み立てモノレイヤー (SAM) を作成するための段階的なクリックサイクロアディションの効率性を実証しました.

結論:

ステップウィズ・クリック・サイクロアディションは,金面に結合した分子線を製造するための効果的な方法である.
観測された輸送移行は,分子システムにおける電荷輸送に関する洞察を提供します.
OPTワイヤーは,将来の電子アプリケーションに有望であり,多様な機能と互換性があります.

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