DPPM-桥梁双核Pt(II) 子复合体:溶液中的化学,结构和光物理重新审视
Roman A Shilov1, Ivan S Podkorytov2, Kristina S Kisel1
1Institute of Chemistry, St. Petersburg State University, Universitetskii av., 26, 198504 Saint Petersburg, Russia.
Inorganic chemistry
|June 5, 2024
概括
新的发光-钉复合体表现出分子内Pt-Pt结合,影响其光物理性质和辐射. 三乙胺通过动态,静态和去质子化路径灭发光.
科学领域:
- 协调化学 协调化学
- 光物理学的光学物理学
- 有机金属化学 有机金属化学
背景情况:
- 子连接物为金属复合体提供独特的协调环境.
- 发光金复合物对各种应用有兴趣.
- 内部分子金属对金属的相互作用可以显著改变电子和光物理性质.
研究的目的:
- 合成和表征新型发光双核和单核-钉复合体.
- 研究溶液和固体相中的光物理性质和结构特征.
- 为了阐明用三乙烯胺灭发光的机制.
主要方法:
- -钉复合物的合成和表征.
- 在二甲溶液中的光物理研究.
- 固态结构分析.固态结构分析.
- 多核核核磁共振光谱用于溶液结构的确定.
- 使用三乙烯胺进行排放灭研究.
主要成果:
- 双核复合体形成一个同步配置,在固体阶段具有分子内Pt-Pt结合和π堆叠.
- 这种堆叠的配置被保留在溶液中,由NMR证实.
- 内部分子 Pt-Pt 结合会导致由于 3MMLCT 激发状态而导致发射的红色转移.
- 三乙胺通过动态和静态路径灭排放;双核复合体也经历了脱质,有助于灭.
- 为三乙烯胺相互作用提出了一种化学平衡方案,并通过31P NMR进行了验证.
结论:
- 合成的-钉复合体表现出独特的结构和光物理特性,由分子内Pt-Pt相互作用驱动.
- 在溶液中保持堆叠的配置对于它们的发光行为至关重要.
- 三乙胺通过多种机制有效地灭发光,提供了对激发状态失活路径的见解.
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