Functionalization of phosphorescent emitters and their host materials by main-group elements for phosphorescent organic light-emitting devices,Chemical Society Reviews

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Functionalization of phosphorescent emitters and their host materials by main-group elements for phosphorescent organic light-emitting devices
Chemical Society Reviews ( IF 40.4 ) Pub Date : 2015-08-06 00:00:00 , DOI: 10.1039/c5cs00424a
Xiaolong Yang _{1,

2,

3,

4,

5} , Guijiang Zhou _{1,

2,

3,

4,

5} , Wai-Yeung Wong _{6,

7,

8,

9,

10}

Affiliation

Phosphorescent organic light-emitting devices (OLEDs) have attracted increased attention from both academic and industrial communities due to their potential practical application in high-resolution full-color displays and energy-saving solid-state lightings. The performance of phosphorescent OLEDs is mainly limited by the phosphorescent transition metal complexes (such as iridium(III), platinum(II), gold(III), ruthenium(II), copper(I) and osmium(II) complexes, etc.) which can play a crucial role in furnishing efficient energy transfer, balanced charge injection/transporting character and high quantum efficiency in the devices. It has been shown that functionalized main-group element (such as boron, silicon, nitrogen, phosphorus, oxygen, sulfur and fluorine, etc.) moieties can be incorporated into phosphorescent emitters and their host materials to tune their triplet energies, frontier molecular orbital energies, charge injection/transporting behavior, photophysical properties and thermal stability and hence bring about highly efficient phosphorescent OLEDs. So, in this review, the recent advances in the phosphorescent emitters and their host materials functionalized with various main-group moieties will be introduced from the point of view of their structure–property relationship. The main emphasis lies on the important role played by the main-group element groups in addressing the key issues of both phosphorescent emitters and their host materials to fulfill high-performance phosphorescent OLEDs.

中文翻译：

磷光有机发光器件的主族元素对磷光发射体及其主体材料的功能化

磷光有机发光器件（OLED）由于其在高分辨率全彩显示器和节能固态照明中的潜在实际应用而引起了学术界和工业界的越来越多的关注。磷光OLED的性能主要受磷光过渡金属配合物（例如铱（III），铂（II），金（III），钌（II），铜（I）和（II）等）的限制。）在提供有效的能量传输，平衡的电荷注入/传输特性和器件的高量子效率方面起着至关重要的作用。研究表明，功能化的主族元素（如硼，硅，氮，磷，氧，硫和氟等）可以将部分掺入磷光发射体及其主体材料中，以调节其三重态能量，前沿分子轨道能量，电荷注入/传输行为，光物理性质和热稳定性，从而带来高效的磷光OLED。因此，在本综述中，将从磷光发射体及其主体材料被各种主族部分官能化的角度来介绍它们的最新进展，从它们的结构-性质关系的角度出发。主要重点在于主族元素组在解决磷光发光体及其主体材料对实现高性能磷光OLED的关键问题中所起的重要作用。

更新日期：2015-08-06

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