C-Au結合形成のためのアセチレン終結群を用いた堅固な有機根性分子結合

Francesc Bejarano¹, Ignacio Jose Olavarria-Contreras², Andrea Droghetti³

¹Department of Molecular Nanoscience and Organic Materials, Institut de Ciència de Materials de Barcelona (ICMAB- CSIC) and CIBER-BBN , Campus de la Universitat Autònoma de Barcelona (UAB), 08193 Bellaterra, Spain.

Journal of the American Chemical Society

|January 9, 2018

まとめ

研究者はより安定した分子電子装置のためにアルキーン群を備えた新しい有機分子を開発した. これらの分子は金電極と強固な結合を形成し,デバイスの再現性と性能を改善します.

科学分野:

分子電子
オーガニック・スピントロニクス
材料科学

背景:

有機性パラマグネットと電気活性分子は分子電子とスピントロニクスの鍵です
現在の制限には,分子/電極接触の安定性と再現性の低下が含まれています.

研究の目的:

Au-C σ結合を形成するための末端アルキン基を持つ持続的有機基を合成する.
単一分子結合における自己組み立てモノレイヤと電子輸送の安定性を調査する.

主な方法:

アルキンの機能を持つ有機基の合成
黄金の上で自己組み立てモノレイヤの形成と特徴付け
単一分子結合を通じた電子輸送の測定
密度関数理論と量子輸送計算

主要な成果:

合成されたリンクは堅固な共性Au-C σ結合を形成する.
これは,硫黄ベースのリンクヤーと比較して,より安定した自己組み立てモノレイヤーと,より明確に定義された分子/電極接触につながります.
単一分子交差点では,導電性の値の変動が減少している.
実験結果と計算結果が一致し結合の性能が改善されたことを確認しました

結論:

アルキニル結合器は,電動分子と金電極を接続するための堅牢で再現可能な方法を提供します.
このアプローチは,従来の硫黄ベースのリンク器の限界を克服します.
この発見によりより信頼性の高い分子電子装置やスピントロニック装置の開発が進んでいます

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