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蓝色光Pt (II) 材料的开发,使用Dibenzofuranyl Imidazole连接物及其在有机发光二极管中的应用

Hakjo Kim¹, Dain Cho¹, Haein Kim¹

¹Division of Science Education, Kangwon National University, Chuncheon 24341, Republic of Korea.

Materials (Basel, Switzerland)

|June 10, 2023

概括

新的天蓝色光金(II) 化合物被合成为有机发光二极管 (OLED). 辅助配体显著影响光物理性质和设备性能,突出其在OLED稳定性中的关键作用.

科学领域:

材料科学材料科学材料科学
有机化学有机化学
光物理学的光学物理学

背景情况:

有机发光二极管 (OLED) 提供了能源效率,但它们的稳定性受到协调连接体的影响.
光金(II) 复合物对OLED应用具有前景,但连接体设计对性能至关重要.

研究的目的:

合成和表征新的天蓝色光Pt(II) 化合物,具有不同的辅助配体.
研究辅助配体对Pt (II) 复合物的光物理性质和电子转换的影响.
为了评估这些复杂物作为多层光OLED设备中的剂的性能.

主要方法:

使用光谱方法合成和表征Pt(II) 化合物.
光发光量子效率 (PLQY) 和衰变时间测量.
多层光OLED的制造和测试.
理论计算 (DFT) 来理解电子过渡.

主要成果:

合成了两种含有C^N合物和不同的辅助配体 (acac和pic) 的Pt(II) 化合物.
化合物一 (acac联体) 呈现出明亮的天蓝色辐射,具有中度的PLQY (0.37) 和短衰变时间 (6.1μs).
用Compound One合的OLED实现了13.6 cdA-1的电流效率和8.4%的外部量子效率在100 cdm-2.2.
理论分析揭示了由辅助连接体影响的明显的电子过渡机制 (π-π*,MLCT,LLCT).

结论:

辅助配体的选择极大地影响了OLED光复合物的光物理性质和稳定性.
在OLED应用中,具有acac辅助连接体的Pt(II) 复合体显示出高效的天蓝色辐射的潜力.
进一步研究辅助联体设计对于优化光OLED的性能和寿命至关重要.

关键词:

酸盐的数量为C^N.辅助连接物辅助连接物异体质的Pt (II) 化合物光有机发光二极管是一种光有机发光二极管.时间依赖密度函数理论

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