由两个协调性联体模拟的化混合物,用于增强和稳定的自陷排放
Yukong Li1, Jinlin Yin1, Honghan Fei1
1Shanghai Key Laboratory of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, 1239 Siping Rd., Shanghai 200092, P. R. China.
Inorganic chemistry
|November 16, 2023
概括
使用两个连接体合成新的化协调聚合物可提高光发光量子产量和稳定性. 这一突破为开发强大,高性能发光材料提供了新的战略.
科学领域:
- 材料科学 材料科学 材料科学
- 固态化学 固态化学
- 光物理学的光学物理学
背景情况:
- 化混合动力提供稳定的宽带发射,但在性能提升方面面临挑战.
- 这些材料的晶体工程对于改善光发光 (PL) 特性至关重要.
研究的目的:
- 开发一种新的合成策略,以提高化协调聚合物的PL性能和稳定性.
- 为了研究双重协调连接体在调制材料性质中的作用.
主要方法:
- 使用两个配体合成分层化协调聚合物:1,4-环环二酸盐 (chdc) 和2,2 二二 (2,2 -bpy).
- 光发光量子产量 (PLQYs) 和化学稳定性的表征.
- 使用密度函数理论 (DFT) 的计算研究和通过 femtosecond 短暂吸收光谱 (fs-TA) 的实验分析.
主要成果:
- 一系列分层的化协调聚合物,Pb6X10[Pb6X10]2+(chdc2-)(2,2 化) 2,已成功合成.
- 引入2.2ahydro-bpy显著增强了紫外线吸收和连接物到金属电荷转移 (LMCT),导致PLQYs与单连接物模板材料相比得到了改进.
- 在各种化学条件下,合成材料在48小时后表现出显著的化学惰性和稳定的宽带发射.
结论:
- 双协调配体提供了一个合理的分子级策略,以增强化学强化协调聚合物的光物理性质.
- 增强的排放归因于自我被捕捉的刺激子,由于LMCT的增加人口从2.2ahydro-bpy.
- 这项工作为设计先进,稳定和高效的发光材料铺平了道路.
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