分子セリウム発光体の放射光度と色を理解し制御する
Yusen Qiao1, Dumitru-Claudiu Sergentu2, Haolin Yin1
1P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry , University of Pennsylvania , 231 South 34th Street , Philadelphia , Pennsylvania 19104 , United States.
Journal of the American Chemical Society
|January 24, 2018
まとめ
新しい分子セリウム複合体は 調節可能な発光を提供します 研究者らは 構造-発光モデルを開発し エネルギー効率の良い素材の明るさや色を 予測し制御しました
科学分野:
- 無機化学
- 材料科学
- フォト物理学
背景:
- 分子セリウム複合体は可視光と紫外線の効率的な光体として出現しています
- 放射の明るさや色などの光学特性を制御することは,特殊なアプリケーションに不可欠です.
研究 の 目的:
- グアニジナート,グアニジナート-アミド,グアニジナート-アリロキシドセリウム (III) コンプレックスにおける構造-光学特性関係を分析し理解する.
- 分子セリウム材料の光度調整のための予測モデルを開発する.
主な方法:
- 8つのトリス ((guanidinate) セリウム複合体の実験的合成と構造的特徴づけ.
- 光発光量子力学による測定
- 電子構造とリラクゼーション経路を分析するための計算研究.
主要な成果:
- グアニジナートリガンド置換物によって影響されるセリウム中心の周りのステリックの重荷は,光発光量子収量と相関する.
- アミドおよびアロキシドリガンドをグアニジナートリガンドに置き換えると,非放射性リラックスが減り,ストークスシフトが減少する.
- セリウム (III) ルミノフォアの包括的な構造-発光モデルが確立された.
結論:
- この研究は,調節可能な,分子,セリウムベースの発光材料の設計のための明確な枠組みを提供します.
- 構造-性質の相関を理解することで, 発光量子収量と色を正確に制御することができます.
- これらの発見は,セリウム・ルミノフォアの新しい応用への道を開きます.
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