| Autor: |
Jia, Tao, Cheng, Pei-Ming, Zhang, Ming-Xuan, Liu, Wei-Dong, Li, Chong-Yang, Su, Hai-Feng, Long, La-Sheng, Zheng, Lan-Sun, Kong, Xiang-Jian |
| Zdroj: |
Journal of the American Chemical Society; October 2024, Vol. 146 Issue: 42 p28618-28623, 6p |
| Abstrakt: |
Coinage-metal clusters with excellent luminescence properties have attracted considerable interest due to their intriguing structures and potential applications. However, achieving strong near-infrared (NIR) luminescence in these clusters is highly challenging. Here, we have successfully synthesized the first LnIII/CuIbimetallic clusters, formulated as [LnCu54O6Cl3(2-MeO-PhC≡C)36] (ClO4)6(Ln = Yb for YbCu54, Er for ErCu54, and Gd for GdCu54). Single crystal X-ray diffraction showed that the LnCu54clusters have a three-layered core–shell structure, consisting of (LnO6)@Cu18Cl3@Cu36units protected by 36 2-MeO-PhC≡C–ligands. Notably, the YbCu54cluster exhibits significant NIR-II luminescence at 986 nm with the solid quantum efficiency of 33.3%, the highest among Cu clusters with NIR-II emission. This work not only reports the first category of LnIII/CuIclusters but also presents a method to enhance NIR luminescence in coinage-metal clusters through the incorporation of LnIIIions. |
| Databáze: |
Supplemental Index |
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