多核黄金(I) -硫化物复合物的异构体自我歧视驱动的二分化,具有增强的光
Liang-Liang Yan1, Ziyong Chen1, Vivian Wing-Wah Yam1
1Institute of Molecular Functional Materials, State Key Laboratory of Synthetic Chemistry, and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, 999077, P. R. China.
Angewandte Chemie (International ed. in English)
|December 7, 2024
概括
新的奇拉黄金 ((I) 集群自组装成更大的结构,增强近红外发光. 这一发现提供了对先进材料的异体体自我分类和组装机制的见解.
科学领域:
- 协调化学 协调化学
- 超分子化学 超分子化学
- 材料科学 材料科学 材料科学
背景情况:
- 奇拉黄金 (Chiral gold) 聚类由于其独特的结构和光物理特性而引起人们的兴趣.
- 开发金属集群的新型组装策略对于设计先进的功能材料至关重要.
研究的目的:
- 通过使用特定的SDP配体,合成非核性性黄金 (I) 硫化集群.
- 为了研究这些集群的自我组装成更大的Achiral异构体.
- 探索这些黄金星团的发光特性和组装机制.
主要方法:
- 通过使用SDP配体,合成十核性性黄金 (I) 硫化集群 (SDP-Au10和RDP-Au10) .
- 通过混合等离子体,形成一个阿基拉性异构体二核性半核集群 (meso-SDP-Au20).
- 光发光性质的表征,包括排放最大值和量子产量.
主要成果:
- 成功组装了十核性黄金(I) 硫化物团.
- 通过1:1的反体混合,形成一个阿基拉尔中集群.
- 在固态中观察强烈的近红外 (NIR) 光发 (λmax ≈ 750 nm).
- 显著增强光发光量子产量 (PLQY) 从8%到25%在中等集群.
- 发现二元化过程对溶剂极性和连接体配置敏感.
结论:
- 这项研究展示了一种简单的方法,用于创建具有增强发光功能的更大的黄金星团.
- 这些发现为了解异体体的自我排序和组装提供了一个平台.
- 这项工作为设计基于性黄金集群的新型NIR发射材料打开了道路.
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