アモルフな調整ポリマーの内在のガラス金属輸送
Jiaze Xie1, Simon Ewing1,2, Jan-Niklas Boyn1,2
1Department of Chemistry, University of Chicago, Chicago, Illinois, USA.
Nature
|October 26, 2022
まとめ
研究者はドーピングや結晶性なしに高伝導性を達成する新しい無形調整ポリマーを開発しました. この画期的な発見により 複雑な有機物質の 頑丈で調節可能な伝導性が 電子機器の高度な用途に利用できます
科学分野:
- 材料科学
- オーガニック電子
- 固体物理学
背景:
- 導電性有機物質は柔軟な電子機器に不可欠ですが,通常は化学ドーピングまたは高電気伝導性のための結晶性が必要です.
- 既存の導電性ポリマーは耐久性のために無形であり,導電性を制限する.
- 調節可能で堅固な伝導性を有する無形な有機物質の内在的な伝導性が必要である.
研究 の 目的:
- 高電気伝導性を有する無形な有機物質を設計し合成する.
- 不規則なシステムにおける内在伝導性の背後にあるメカニズムを調査する.
- この新材料の安定性と応用可能性を評価する.
主な方法:
- 新しい無形協調ポリマーの合成:ニッケルテトラチアフルバレンテトラチオラート.
- 電気伝導性の測定
- 構造と性質の関係を理解するための理論的モデリング.
- 様々な環境条件 (湿度,pH,温度) の下での安定性試験
主要な成果:
- 合成された材料,Ni (dmit) 2は,非常に高い電子伝導性 (最大1,200 S cm−1) を表しています.
- この材料は固有のガラスのような金属の振る舞いを示し,乱雑なシステムにおける伝導性の常識的な理解に逆らっています.
- 高伝導性は厳しい条件下でも維持され,pH0~14と最高140°Cの湿った空気で何週間も安定している.
結論:
- 分子設計は,ドープされていない無形な有機物質で高伝導性を達成できます.
- この発見は,金属輸送の周期構造の必要性を疑問視しています.
- この研究は 頑丈で 調節可能で 処理可能な有機電子材料の 新しい道を開きます
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