含铱配合物聚合物磷光材料及其电致发光性能

梁爱辉; 黄贵; 王志平; 陈水亮; 侯豪情

doi:10.7536/PC150937

化学进展 ›› 2016, Vol. 28 ›› Issue (4) :471-481 DOI: 10.7536/PC150937

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含铱配合物聚合物磷光材料及其电致发光性能

梁爱辉*, 黄贵, 王志平, 陈水亮*, 侯豪情

作者信息 +

Polymer Phosphorescent Materials with Iridium Complexes and Their Electroluminescent Properties

Liang Aihui*, Huang Gui, Wang Zhiping, Chen Shuiliang*, Hou Haoqing

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文章历史 +

摘要

聚合物电致发光器件由于在大面积平板显示和固态照明上的潜在应用,在学术研究和工业应用领域引起了广泛的关注.聚合物电致发光器件可以通过溶液加工的方法制备,制作工艺简单,成本低、材料省,并且可以实现大面积柔性显示.和荧光聚合物材料相比,磷光铱配合物聚合物材料可以同时利用单线态和三线态激子发光,器件的内量子效率理论上能达到100%,突破了传统25%的极限,因而受到广泛关注.基于此,本文综述了含铱配合物聚合物磷光材料的研究进展,主要对含铱配合物线型聚合物和超分子聚合物的合成、结构特点以及光电特性进行了总结,并讨论了聚合物结构对材料性能的影响.

Abstract

Polymer light-emitting diodes (PLEDs) have drawn tremendous research interest in both academia and industry due to their potential applications in large-area flat panel display and solid-state lighting. With excellent properties of low-cost, lightweight, flexible and large-scale manufacture by using solution processing approaches, such as spin-coating, ink-jet printing and roll-to-roll, PLEDs have gotten more and more attention. Compared with fluorescent PLEDs, which use only singlet excitons for light emission, phosphorescent PLEDs can utilize both singlet and triplet excitons for light emission, which increases the quantum efficiency of PLEDs. Theoretically, the quantum efficiency of phosphorescent PLEDs can be higher than that of fluorescent PLEDs by four times and an external quantum efficiency over 20% can be obtained. Iridium complex-containing phosphorescent materials have been successfully developed and applied in high performance solution-processed PLEDs. Among them, the iridium complexes are covalently bonded into the polymer main chain or onto side chain, which can effectively avoid the phase separation and dopant aggregation. Thus, efficient electrophosphorescent devices based on these materials with reduced efficiency loss could be expected. More recently, solution-processed supramolecular polymers with iridium complexes were also successfully demonstrated and show promising application potential for high performance solution processed PLEDs. Therefore, we review the recent progress of iridium complex-based electrophosphorescent polymers materials in this paper. The synthesis, structural characterization and optoelectronic properties of iridium-based electrophosphorescent materials, including the liner polymers and supramolecular polymers are mainly summarized, and the influence of polymer structure on the material properties is also discussed.

Contents
1 Introduction
2 Electrophosphorescent polymers
2.1 Red electrophosphorescent polymers
2.2 Green electrophosphorescent polymers
2.3 Blue electrophosphorescent polymers
2.4 White electrophosphorescent polymers
3 Electrophosphorescent supramolecular polymers
4 Conclusion

Graphical abstract

关键词

铱配合物 / 电致磷光 / 超分子聚合物

Key words

iridium complexes / electrophosphorescence / supramolecular polymer

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梁爱辉, 黄贵, 王志平, 陈水亮, 侯豪情. 含铱配合物聚合物磷光材料及其电致发光性能[J]. 化学进展, 2016, 28(4): 471-481 DOI:10.7536/PC150937

Liang Aihui, Huang Gui, Wang Zhiping, Chen Shuiliang, Hou Haoqing. Polymer Phosphorescent Materials with Iridium Complexes and Their Electroluminescent Properties[J]. Progress in Chemistry, 2016, 28(4): 471-481 DOI:10.7536/PC150937

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