含樟脑基辅助配体铱配合物的合成及光电性能

周会东; 张浩清; 洑阳成真; 童碧海

doi:10.3969/j.issn.1671-7872.2018.04.006

含樟脑基辅助配体铱配合物的合成及光电性能

安徽工业大学冶金工程学院, 安徽马鞍山 243032

基金项目:

国家自然科学基金项目（21572001）；安徽省大学生创新创业训练项目（201810360136）

详细信息

作者简介:
周会东(2000-),男,安徽六安人,研究方向为光电功能材料。

中图分类号: O614.82
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出版历程
- 收稿日期: 2018-09-20
- 网络出版日期: 2022-09-25
- 发布日期: 2018-10-29

Synthesis and Optoelectronic Properties of Iridium Complex Containing Camphor Based Auxiliary Ligands

School of Metallurgy Engineering, Anhui University of Technology, Ma'anshan 243032, China

摘要

摘要: 以2-苯基喹啉为主配体，以乙酰丙酮和樟脑基配体为辅助配体，分别合成铱配合物1和2，通过核磁共振氢谱、红外光谱及质谱表征配合物的结构，并研究其光物理性能和电致发光性能。结果表明：配合物1和2的发光波长分别为603，619 nm，分别属于橙光和红光发射，量子效率分别为34%和53%，樟脑基辅助配体能有效提高配合物的发光量子效率；配合物1和2的电致发光波长分别红移到612，622 nm，樟脑基辅助配体能有效降低电致发光光谱的发光红移；配合物1器件的最大外量子效率为0.014%，最大亮度30.2 cd/m²，与配合物1器件相比，配合物2的外量子效率提高到3倍以上，最大外量子效率达0.044%，最大亮度48.6 cd/m²，且其色坐标为（0.64，0.35），接近标准红色的色坐标，配体中引入樟脑基团能有效提高配合物的发光效率，发光颜色对掺杂浓度不敏感。该研究结果对设计开发综合性能优异的有机电致发光材料有借鉴意义。
- 铱配合物 /
- 樟脑 /
- 有机电致发光
Abstract: Iridium complexes 1 and 2 were synthesized with 2-phenyl quinoline as the main ligand and acetyl acetone, and camphor based pyridyl pyrazole derivatives as the auxiliary ligands. The structures of the complexes were characterized by nuclear magnetic resonance(NMR), infra red(IR) spectrum and mass spectrum(MS). The photophysical and electroluminescent properties of the complexes were also studied. The results show that the luminescence wavelengths of complexes 1 and 2 are 603 nm and 619 nm, respectively, which belong to orange and red light emission accordingly, and the quantum efficiencies are 34% and 53%, respectively, indicating that the camphor based auxiliary ligands could effectively improve the photoluminescence quantum efficiency of iridium complexes. The electroluminescent wavelengths of the complexes 1 and 2 are red-shifted to 612, 622 nm, respectively, indicating that the camphor based auxiliary ligands could effectivelyreduce thered shift of luminescence. The maximum external quantum efficiency of the device based on complex 1 is 0.014%, and the maximum brightness is 30.2 cd/m². Compared with the device based on complex 1, the external quantum efficiency of complex 2 is increased to more than 3 times, the maximum external quantum efficiency reaches 0.044%, and the maximum brightness is 48.6 cd/m². Moreover, its color coordinates are (0.64, 0.35), and close to the standard red color coordinates. Therefore, the introduction of camphor group in the auxiliary ligand can effectively improve the luminescence efficiency of the complexes, and make the luminescence color insensitive to their concentration. These results are useful for the design and development of organic electroluminescent materials with excellent comprehensive performance.
- iridium complex /
- camphor /
- organic electroluminescence

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参考文献(14)

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