ヘクサアザトリフェニレン合体のシアノルテナート複合体の光物理学的および構造的性質
Juan-Manuel Herrera1, Simon J A Pope, Anthony J H M Meijer
1Department of Chemistry, University of Sheffield, Sheffield S3 7HF, U.K.
Journal of the American Chemical Society
|August 24, 2007
まとめ
研究者らは,ヘクサアザトリフェニレン (HAT) リガンドを使用して新しいシアノルテナート複合体を合成し,ユニークな光物理および構造特性を有する調整ネットワークを作成しました. これらの複合体は強い光吸収を示し,ランタナイド発光を感知させることができる.
科学分野:
- 協調化化学について
- マテリアルサイエンス 材料科学
- フォトフィジックスの光学
背景:
- トリトピック・ブリッジング・リガンドであるヘクサアザトリフェニレン (HAT) は,新しい協調複合体の構築におけるその可能性のために調査されています.
- シアノルテナート複合体は,その光物理的性質と感受剤としての用途のために興味があります.
研究 の 目的:
- HATリガンドを組み込んだ単核,二核,三核サイアノルテナート複合体を合成し,特徴づけること.
- これらの新しい複合体のMLCT吸収と興奮状態ダイナミクスを含む光物理学的性質を調査する.
- 構造的多様性と,ランタニドイオンによる連携ネットワークの形成の可能性を調査する.
主な方法:
- HAT.を使用したモノ-,二-,三核シアノルテナート複合体の合成.
- UV-Vis吸収と時間解像度IRスペクトロスコピーを含む光物理学的性質の特徴化.
- 様々なランタニド (III) 塩を用いた調整ネットワークの形成と構造分析.
主要な成果:
- HATでモノ,ディ,トリヌクレアシアノルテナート複合体を成功裏に準備し,強力なMLCT吸収とソルバトクロミズムを示した.
- 長寿命のMLCT興奮状態を検出し,固体またはガラスのマトリックスで赤色発光を観測した.
- ランタニドイオンを用いた多様な1次元,2次元,3次元調整ネットワークを構築し,Ru --> Lnエネルギー伝送を実証し,感受性の高いNIR発光をもたらした.
結論:
- HATリガンドは,調節可能な光物理的および構造的特性を有する多核シアノルテナート複合体の形成を促進します.
- これらの複合体は,発光とエネルギー伝送における潜在的な応用を持つ協調ネットワークの汎用的な構成要素として機能します.
- ルテニウムからランタニド中心への光誘導によるエネルギー伝達は,近赤外線放射の効率的な感受性を可能にします.
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