タンパク質電子:コンタクトの化学調節 ゴールド-アズリン-ゴールドの交差点におけるエネルギーレベル調整
Journal of the American Chemical Society
|September 21, 2018
まとめ
化学的に変異したタンパク質と電極の結合は 電子の輸送を制御します この方法は,外部のゲートなしで共鳴とオフ共鳴のトンネリングの間の輸送メカニズムを調節し,電子機器の正確な制御を可能にします.
科学分野:
- バイオ分子電子
- 分子自己組み立て
- 料金輸送
背景:
- 生物分子の間の電荷輸送を制御することは 生物分子の電子学にとって極めて重要です
- 固体結合は,バイオ分子における電子輸送 (ETp) を研究するためのプラットフォームを提供します.
研究 の 目的:
- 生物分子結合でETpを制御するための電極分子結合の化学調節を実証する.
- 化学変化による共鳴と非共鳴のトンネルメカニズムの切り替えを調査する.
主な方法:
- タンパク質アズリン (Az) をリトグラフィーで準備した金電極結合に利用した.
- Au-S結合とリンカー分子を経由してAZを結合した金電極.
- ETpのメカニズムを変えるため,アミド結合形成によるリンクナー-タンパク質の結合を改変した.
主要な成果:
- 電極とアズリンの間の結合を化学的に調節することによってETpの制御を達成した.
- アミド結合を変化させることで,共振からオフ共振のトンネリングへのETpメカニズムのスイッチが示されました.
- 異なる電極-タンパク質結合構成のためのアズリン境界軌道エネルギーが決定された.
結論:
- 電子分子結合の化学的改変は,生物分子結合でETpを制御するための方法を提供します.
- このアプローチは,ゲート電極のない2端デバイスで調節可能な電子特性を可能にします.
- バイオ分子電子機器の 質的・量的な制御の 経路を開きます
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