大気と移動イオンによる分子電子装置の内部電場調節
Prakash Chandra Mondal1, Ushula M Tefashe1, Richard L McCreery1
1Department of Chemistry , University of Alberta , Edmonton , Alberta T6G 2G2 , Canada.
Journal of the American Chemical Society
|May 18, 2018
まとめ
移動性イオンとアセトニトリルは分子交差点の伝導性と電子の振る舞いを大きく変化させる. このイオン運動と分子の方向転換は デバイスの特性に対する ダイナミックな制御を提供します
科学分野:
- 分子電子
- 固体化学
- 材料科学
背景:
- 分子電子結合は内部ポテンシャルプロファイルと電場によって制御されます.
- 電気化学プロセスは,電解イオンによる電場変化に依存し,イオン二重層を形成します.
研究 の 目的:
- 固体分子結合に移動イオンの影響を調査する.
- アロマティック分子とイオン導入時に導電性の変化を分析する.
主な方法:
- 炭素表面の間のアロマティック分子による分子結合の製造.
- アセトニトリルとリチウムイオンの導入
- 伝導率,阻力,電流-電圧の特性を測定する.
- 時間のスケールによる変化を観察するための一時的な実験.
主要な成果:
- アセトニトリル単独では,小さな導電性変化を引き起こしたが,リチウムイオンと併用すると,大きな導電性減少を引き起こした.
- 導電量の変化はマイクロ秒からミリ秒の時間スケールで発生し,デバイスのインペダンスと温度に依存します.
- リチウムベンゾートとの分子結合は対称性から修正行動への可逆変換を示した.
結論:
- アセトニトリルとLi+イオンモーションスクリーン電極のフィールド誘発的方向転換,内部電位プロファイルを変更する.
- これらのイオン効果は,分子結合の電子的行動を動的に制御するための方法を提供します.
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