水溶性レドックス活性ケージホスティングポリオキシメタラート

Li-Xuan Cai¹, Shao-Chuan Li^1,2, Dan-Ni Yan^1,3

¹State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter , Chinese Academy of Sciences , Fuzhou 350002 , PR China.

Journal of the American Chemical Society

|March 15, 2018

まとめ

研究者は,分子をカプセル化するための新しいリドックス活性パラジアムケージ (Pd4L2) を開発しました. この超分子ケージは,触媒脱硫反応を強化し,従来の触媒方法の有望な代替手段を提供します.

科学分野:

超分子化学
カタリシス
材料科学

背景:

容器分子は同質と異質の触媒の間の橋渡しをします
超分子ケージは化学変化のための分子ナノ細胞として機能します
以前のパラジウムケージ (Pd6L4など) は,空洞のサイズと酸化還元活性に制限があります.

研究の目的:

水溶性,リドックス活性な超分子パラジウムケージ (Pd4L2) を設計し合成する.
Pd4L2ケージの芳香分子とポリオキシメタレート (POM) の封じ込め能力を調査する.
POMs@Pd4L2宿主-ゲスト複合体の性能を触媒解硫反応で評価する.

主な方法:

2,4,6-トリ-4-ピリジル-1,3,5-トリアジン (TPT) リガンドとパラジウムコーナーを使用して,Pd4L2の超分子ケージの設計合成.
ピリジニウム結合によるp-キシレンブリッジに置き換えることでケージ構造の変更.
様々なアロマティック分子とポリオキシメタレート (POM) を用いた封じ込み試験
脱硫反応におけるPOMs@Pd4L2複合体の触媒試験,変換と製品の選択性を分析する.

主要な成果:

水溶性,リドックス活性Pd4L2ケージの合成に成功し,内腔が拡張され,分かれています.
ポリアロマティックとPOMを含むより広い範囲のゲストを封じ込めることが示されました.
POMs@Pd4L2複合体によって触媒化される脱硫反応における (硫化物より硫化物) 変換と選択性が著しく改善された.

結論:

新しいPd4L2ケージは超分子化学の進歩であり,調整可能な酸化還元活性と空洞性を持っています.
この新世代のオーガノパラジウムケージは,特に宿主-ゲスト反応の強化において,触媒の大きな可能性を示しています.
将来のアプリケーションには,これらの分子容器の有用性を拡張する,光色および光レドックス機能が含まれます.

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