化桥复合物:对聚合和发光产生连接剂和溶剂的影响
Viktoria V Khistiaeva1, Stefan Buss2, Toni Eskelinen1,3
1Department of Chemistry, University of Eastern Finland P.O. Box 111 FI-80100 Joensuu Finland igor.koshevoy@uef.fi.
Chemical science
|March 15, 2024
概括
((II) 双金属复合物与化物桥梁表现出强烈的室温光. 这些复合体自组装成可调整的聚合物,使可见光到近红外光谱的动态光发射成为可能.
科学领域:
- 超分子化学 超分子化学
- 材料科学 材料科学 材料科学
- 摄影化学的使用.
背景情况:
- 由于金属对金属和π-π堆叠相互作用, (II) 复合物对光功能的材料至关重要.
- 利用这些相互作用是开发先进分子材料的关键.
研究的目的:
- 合成和表征新型的化物桥接双金属 (II) 复合物.
- 为了研究它们的光物理性质和自我组装行为.
- 探索它们在动态发光系统中的潜力.
主要方法:
- 合成双金属 (II) 复合物与循环金属化连接物.
- 光发光谱学用于确定量子产量和辐射波长.
- 扩散NMR光谱学用于研究自我组装和聚合.
- 溶剂和温度依赖的研究,以控制聚合.
主要成果:
- 合成的双金属复合物[{Pt(C^N^N) }2(CN)][BAr4F]表现出强烈的光 (溶液中的量子产量高达0.73,固态的0.62).
- 具有不受阻碍的配体的复合体在溶液中自组成四重体物种[{Pt(C^N^N) }2(CN) ]44+.
- 通过控制聚合,可以调整发射颜色从绿色到近红外 (在固态中高达912nm).
- 与单核 (II) 复合物相比,光物理性能得到增强.
结论:
- 刚性双金属单元通过受控的分子间聚合促进了增强的光物理性质.
- 这些系统为动态,可调节的发光材料提供了一个新的平台.
- 调节聚合体大小的能力提供了微调发光机制.
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