上转换发光与双烯Yb(III) 酸盐:皇冠与皇冠对比. 在离散异多重核架构中的线性聚乙烯连接器
Nadège Hamon1, Léna Godec2, Samuel Sanchez2
1Univ Brest, UMR CNRS 6521-, Laboratoire CEMCA, F 29200, Brest, France.
Angewandte Chemie (International ed. in English)
|November 27, 2024
概括
新的配体产生双核 (Yb) 复合体,这些复合体表现出合作性向上转换 (UC) 发光. 这些Yb复合体在近红外激发时有效地使 (Tb) 辐射敏感,为先进的光学材料铺平了道路.
科学领域:
- 协调化学 协调化学
- 兰化物复合物 兰化物复合物
- 发光光谱光谱学 发光光谱光谱
背景情况:
- 开发用于胺协调的新型配体.
- 探索双核兰坦化物复合物的独特光物理性质.
- 研究合作社升级转换 (UC) 现象.
研究的目的:
- 合成和表征新的双基酸基联体.
- 调查兰坦化酸盐 (Lu,Yb,Tb) 与这些连接体的协调行为.
- 探索双核Yb复合体的上转换发光特性及其对Tb发射的敏感化.
主要方法:
- 单核 (L1) 和双核 (L2,L3) 配体的合成.
- 使用NMR定位 (Lu) 和UV/Vis/发光光谱 (Yb) 的兰他尼德离子协调研究.
- 双核Yb复合物的光谱表征及其与Tb的UC发光,包括生命周期分析和日志图.
主要成果:
- 在水性介质中成功合成了连接体和分离了双核Yb复合体.
- 在D2O中在980nm激发Yb时观察合作上转换 (UC) 光发.
- 通过Yb复合体对Tb辐射进行有效的敏感化,四核异金属复合体显示最强烈的UC辐射.
结论:
- 具有新子的双核Yb复合体表现出高效的合作性向上转换 (UC) 发光.
- 这些复合体显示出强烈的Yb-Tb能量转移,导致可见的Tb辐射.
- 这些发现突出了在光学材料和传感方面的潜在应用.
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