ダイアゾシンコーディネーションケージの光駆動分散装置
Haeri Lee1,2, Jacopo Tessarolo1, Daniel Langbehn3
1Department of Chemistry and Chemical Biology, TU Dortmund University, Otto Hahn Straße 6, 44227 Dortmund, Germany.
Journal of the American Chemical Society
|January 26, 2022
まとめ
研究者らは,ダイアゾシン光スイッチを使用して,新しい光に反応するパラジウム調整ケージを開発しました. このケージは光を使って ゲストを逆向きに結合し 適応性のある受容体や 薬物投与システムに 潜在力を提供します
科学分野:
- 超分子化学
- 写真化学
- 協調化学
背景:
- 刺激に反応する調整ケージは,ゲストの封じ込めと放出を動的に制御できます.
- 光は,正確な制御と浪費の欠如により,反応性のあるシステムにとって理想的な刺激です.
- 先進的な分子システムには 新しい光交換可能な構成要素の開発が不可欠です
研究 の 目的:
- ダイアゾシン光スイッチを組み込んだ最初のパラジアム媒介調整ケージを報告する.
- 照明による調整ケージの組み立てと分解を調査する.
- 写真交換可能なケージの ゲストの結合能力を調べるためだ
主な方法:
- ダイアゾシンを含むリガンドを用いたパラジアム媒介の調整ケージの合成
- 特定の波長 (385 nm と 530 nm) で UV-Vis の吸収と照射を用いた光異性化研究.
- NMR,イオンモビリティESI-MS,X線微分を用いたケージ組立,ゲスト結合,分解の特徴化.
主要な成果:
- *cis*-光同位体は種混合体 ([Pd-L2) を形成し, *trans*-同位体は定義された[Pd2-L4]のケージを形成する.
- [Pd2L4]ケージは,連続した紫外線照射 (385 nm) の下で二硫酸客を反転的に結合する.
- 熱的なリラックスまたは530nmの光は,ケージの解体とゲストの解放を誘発し, *cis*システムに戻します.
結論:
- ダイアゾチンを基にした新しい写真交換可能なパラジウム調整ケージが成功して合成されました.
- このケージは光によって制御される 逆転性ゲスト結合を示し,光で活性化される 分子装置の可能性を示している.
- この研究は,ダイナミックで反応性の高い超分子システムを設計するためのツールキットを拡張します.
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