具有非传统N-异环的双坐标Cu (I) 复合物的高效光电发光
Journal of the American Chemical Society
|February 16, 2019
概括
从紫色到红色的可调节发射的新发光铜I) 复合物被开发出来. 这些复合物在有机发光二极管 (OLED) 中实现了高量子效率和性能.
科学领域:
- 材料科学
- 摄影化学
- 有机电子
背景情况:
- 双坐标铜 (I) 复合物对于发光应用具有前景.
- N-异环碳酸配体提供可调节的电子特性.
- 碳烯衍生物作为发光材料中的多功能供体.
研究的目的:
- 合成和表征新型发光的双坐标铜 (I) 复合物.
- 研究连接体结构对辐射颜色和光物理性能的影响.
- 评估这些复合体在有机发光二极管 (OLED) 的性能.
主要方法:
- 六个发光的Cu ((I) 复合物的合成与单氨基氨基碳 (MAC*) 和二氨基碳 (DAC*) 连接物.
- 碳基 (Cz) 供体组的系统变化,包括单基和二基替代衍生物.
- 光物理特征包括辐射光谱,量子效率,衰变寿命和溶解色谱研究.
- 使用合成复合物作为排放剂或整洁层制造和测试OLED设备.
主要成果:
- 通过修改碳和碳基单元,对270nm (紫色到红色) 的发射颜色进行调整.
- 复合物实现了高光发光量子效率 (高达100%) 和短衰变寿命 (≈1μs).
- 辐射速率常数与最先进的光发射器相当.
- 使用 (MAC*) Cu ((Cz) 制造的OLED显示出高的外部量子效率 (EQE=19.4%) 和亮度 (54,000 cd/m2).
- 该综合体还作为一个高效的清洁排放层 (EQE = 16.3%).
结论:
- 开发的Cu (I) 复合体提供了可调节的高效发光平台.
- 这些材料显示出高性能OLED应用的巨大潜力.
- 连接物设计策略能够精确控制排放特性和装置效率.
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