深红色光化复合物的合成和性能,其中用Pyrone作为辅助配体
Wen Jiang1,2, Wenming Hou3, Caixian Yan1
1Kunming Institute of Precious Metals, Yunnan Precious Metals Laboratory Co., Ltd., Kunming 650106, China.
Molecules (Basel, Switzerland)
|July 13, 2024
概括
两种新型的复合物,Irpq2ma和Irpq2ema,被开发为有机发光二极管 (OLED) 的深红色体. 伊尔显示出卓越的发光性能,实现了更高的电流效率和外部量子效率.
科学领域:
- 材料科学 材料科学 材料科学
- 有机电子 有机电子
- 摄影化学的使用.
背景情况:
- 开发高效的光材料对于先进的有机发光二极管 (OLED) 是至关重要的.
- 复合物因其光特性而受到广泛研究,特别是红色发射.
- 调整连接体结构可以优化光物理和电发光特性.
研究的目的:
- 为深红色光合成和表征两种新的异体质复合物,Ir(piq) 2 ((ma) 和Ir(piq) 2 ((ema),用于深红色光.
- 为了评估它们作为光OLED中的发射器的性能.
- 为了比较它们的特性与传统的红色复合物.
主要方法:
- 使用1-化 (piq) 和以为基础的辅助配体 (ma,ema) 合成双环金属化异构体复合物.
- 光物理,电化学和电光发光性质的表征.
- 简单的光OLED设备的制造和测试.
主要成果:
- 无论是Ir ((piq) 2 ((ma) 还是Ir ((piq) 2 ((ema) 都对复合物的特性表现出类似的影响.
- 在光OLED中,Ir(piq) 2(ma) 显示出优异的性能,电流效率为9.39 cd A-1和外部量子效率 (EQE) 为12.09%.
- 它的电流效率为8.6cdA-1和EQE为10.19%.
结论:
- 开发的复合物显示为OLED应用的深红色光体具有前途.
- 与传统的Ir ((piq) 2 ((acac) 综合体相比,Ir ((piq) 2 ((ma) 显示了增强的发光性能.
- 辅助联体的选择显著影响光OLED的效率.
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