アンヒドリドの合成後の改変,階層的な金属有機構造
Shoushun Chen1, Zhongxin Song2,3, Jinghui Lyu1,4
1Department of Chemistry, The University of Western Ontario, London, Ontario, Canada N6A 5B7.
Journal of the American Chemical Society
|February 11, 2020
まとめ
研究者は,階層的に多孔なMIL-121のアンヒドリドアンカーを使用して,金属有機フレームワーク (MOF) のための新しいポスト合成改造 (PSM) プラットフォームを開発しました. この方法は,高度なMOF材料のために多様な分子と金属複合体を多用途に組み込むことができます.
科学分野:
- 材料科学
- ナノテクノロジー
- 化学工学
背景:
- メタル・オーガニック・フレームワーク (MOF) は,様々な用途に不可欠な多用性のある多孔性材料です.
- 合成後の改変 (PSM) は,有機結合体を機能化することによって,MOFの特性を高めます.
- 既存のPSM方法は,様々な分子や複合体を組み込む上で限界があります.
研究 の 目的:
- アンヒドリド機能群を用いたMOFのPSMのための新しいプラットフォームを確立する.
- MOFの機能化のためにアンヒドリドの反応性と階層的な多孔性を活用する.
- 幅広いゲスト分子と金属複合体を組み込むためのプラットフォームの能力を実証します.
主な方法:
- 無水化機能群を階層的に多孔なMOF (MIL-121) に導入する.
- 様々なゲスト分子 (アルコール,アミン,チオール) がアンヒドリド群に結合する.
- 機能化されたMOFに貴金属 (Pt(II) /Pt(IV)) 複合体を組み込む.
- 異なるサイズのゲストに対して階層的な毛穴利用の実証.
主要な成果:
- アンヒドリドで機能化されたMOF (MIL-121) は,多様なゲスト分子に対して高い反応性を示した.
- 階層的な毛穴は,小さな (メタノール) から大きな (ポリアロマティック・アミン) ゲスト種の組み込みを容易にした.
- Pt (II) / Pt (IV) を含む貴金属複合体は,MOF構造にうまく統合されました.
- Ptベースの電解剤が合成され,酸素還元反応 (ORR) のための優れた活性を示した.
結論:
- アンヒドリド機能化に基づくMOFの新規で効果的なPSMプラットフォームが開発されました.
- このアプローチは,多様な有機分子と金属複合体を組み込むための汎用的な戦略を提供します.
- 開発されたMOFベースの電気触媒は,燃料電池とエネルギー貯蔵における応用に大きな可能性を示しています.
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