2D導電MOFにおける電荷輸送の制御―窒素に富んだリガンドと化学的機能の役割
Petru Apostol1, Sai Manoj Gali2, Alice Su3
1Institute of Condensed Matter and Nanosciences, Molecular Chemistry, Materials and Catalysis, Université Catholique de Louvain, Louvain-la-Neuve B-1348, Belgium.
Journal of the American Chemical Society
|November 3, 2023
まとめ
研究者は合成後に化学的に改造できる新しい電気伝導金属有機フレームワーク (2D-e-MOF) を開発した. Ni3 ((HITAT) 2) をメタネスルフォニル基で機能化すると,電気伝導性が約20倍に調節される.
科学分野:
- 材料科学
- 化学について
- ナノテクノロジー
背景:
- 二次元の電気伝導性金属有機フレームワーク (2D-e-MOF) は有望な機能材料である.
- 合成後の化学機能化と2D-e-MOFにおける輸送特性の微調整は依然として困難です.
研究 の 目的:
- 機能化後の反応部位を持つ新しい同構造2D-e-MOFを合成し,特徴づけること.
- 2D-e-MOFの電気輸送特性に対する化学変化の影響を調査する.
主な方法:
- 新しいリガンドHATATとHATBimを用いた2つの同構造2D-e-MOF,Ni3 ((HITAT) 2) とNi3 ((HITBim) 2) の合成.
- 大量伝導性と温度依存の電荷輸送の測定
- 電子構造の密度関数理論 (DFT) 分析
- メタネスルフォニル基による合成後の共性機能化.
主要な成果:
- Ni3 ((HITAT) 2) とNi3 ((HITBim) 2) は,それぞれ44mS cm-1の伝導性を有する,温度で活性化された電荷輸送を示す.
- DFT分析は,HATATとHATBimリガンドの電子密度分布とLUMOエネルギーにおける違いを明らかにした.
- Ni3 ((HITAT) 2) をメタネスルフォニル基で機能化すると,電気伝導性が約20倍に調節される.
結論:
- 開発された2D-e-MOFは,合成後の改変のための反応性サイトを提供します.
- 化学機能化は,2D-e-MOFの電気伝導性を正確に調節するための経路を提供します.
- この研究は,化学的および電気的特性を合わせた多孔性の機能材料を設計するための戦略を提示しています.
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