ヘテロレプティック・コッパー (I) マクロサイクル・フェナントロリン・リガンドを含む偽ロタキサン
Meera Mohankumar1, Michel Holler1, Eric Meichsner1
1Laboratoire de Chimie des Matériaux Moléculaires, Université de Strasbourg et CNRS (UMR7509), ECPM , 67087 Strasbourg Cedex 2, France.
Journal of the American Chemical Society
|January 4, 2018
まとめ
マクロサイクリックフェナントロリンリガンドを持つ銅 (I) 擬光剤は,調節可能な発光特性を示す. 最大のリングシステムは,有機発光ダイオード (OLED) の安定性と発光量を向上させました.
科学分野:
- 協調化学
- 材料科学
- フォト物理学
背景:
- 銅 (I) 複合体は,光電子アプリケーションに有望である.
- 偽ロタキサンには独特の構造と電子特性があります.
- マクロサイクルのリガンドは,複合体の安定性と性能に影響を与える.
研究 の 目的:
- 異なるマクロサイクリックフェナントロリンリガンドの大きさを持つ銅 (I) 偽ロタキサンを合成し,特徴づけること.
- これらの複合体の光物理的性質と構造動態を調査する.
- 有機発光ダイオード (OLED) の発光材料としての性能を評価する.
主な方法:
- ビス[2-]ディフェニルフォスフィノフェニルエーテル (POP) とマクロサイクルフェナントロリンリガンドを用いた銅 (I) 偽ロタキサンの合成.
- 形状の均衡を分析するための変数温度試験.
- 吸収と発光スペクトロスコーピー (溶液と固体).
- 興奮状態の寿命測定
- OLEDデバイスの製造とテスト
主要な成果:
- 銅 ((I) 偽ロタキサン ([Cu ((mXX)) ((POP)) ]+,mXX = m30,m37,m42) を成功裏に製造した.
- マクロサイクルの折りたたみによる動的形状均衡が観察された.
- 溶液では20~30%の光発光量子産量 (PLQY) を有する金属からリガンドへの電荷移転放射,PMMAフィルムでは約40~45%まで強化される.
- 粉末のサンプルでは,熱で活性化された遅延した光が観察されました.
- 最大のマクロサイクル ([Cu(m42) ((POP)) は,マクロサイクルのない基準複合体と比較して,明るく緑色のOLEDを生成した.
結論:
- 構造的変更,特にマクロサイクリックリガンドの組み込みは,銅 (I) 複合体の光物理的特性およびデバイス性能に大きな影響を及ぼします.
- 最大のシドオロタキサン ([Cu(m42) ((POP) ]+) は,安定して効率的な電光装置の潜在性を示しています.
- この研究は,OLEDアプリケーションのための高度なCu (I) ベースの材料の開発におけるマクロサイクル設計の重要性を強調しています.
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