Smart Design on the Cyclometalated Ligands of Iridium(III) Complexes for Facile Tuning of Phosphorescence Color Spanning from Deep-Blue to Near-Infrared

被引：38
|
作者：
Chen, Zhao [1 ,2 ]
Wang, Liqi [1 ,2 ]
Ho, Cheuk-Lam [3 ]
Chen, Shuming [4 ]
Suramitr, Songwut [5 ,6 ]
Plucksacholatarn, Aunyamanee [5 ,6 ]
Zhu, Nianyong [1 ,2 ]
Hannongbua, Supa [5 ,6 ]
Wong, Wai-Yeung [1 ,2 ,3 ]
机构：
[1] Hong Kong Baptist Univ, Inst Mol Funct Mat, Kowloon Tong, Waterloo Rd, Hong Kong, Peoples R China
[2] Hong Kong Baptist Univ, Dept Chem, Kowloon Tong, Waterloo Rd, Hong Kong, Peoples R China
[3] Hong Kong Polytech Univ, Dept Appl Biol & Chem Technol, Hong Hom, Hong Kong, Peoples R China
[4] Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen 518055, Peoples R China
[5] Kasetsart Univ, Dept Chem, Fac Sci, Bangkok 10900, Thailand
[6] Kasetsart Univ, KU Inst Adv Studies, Ctr Adv Studies Nanotechnol Chem Food & Agr Ind, Bangkok 10900, Thailand
来源：
ADVANCED OPTICAL MATERIALS | 2018年 / 6卷 / 23期
基金：
中国国家自然科学基金;
关键词：
full-color emission; iridium complexes; near-infrared; organic light-emitting diodes; trifluoromethyl substituent; LIGHT-EMITTING-DIODES; EXTERNAL QUANTUM EFFICIENCY; RED PHOSPHORESCENCE; RATIONAL DESIGN; PHOTOLUMINESCENCE; EMITTERS; SERIES;
D O I：
10.1002/adom.201800824
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
It has long been a challenge to achieve iridium(III) complexes with emission colors covering the whole visible and near-infrared wavelengths, by using similar cyclometalating ligands. Herein, a series of iridium(III) complexes that accomplish broadly tunable phosphorescence from 420 to 729 nm through the use of trifluoromethyl substituents and other conjugated units such as [1,2,5] thiadiazolo[3,4-c] pyridine in the cyclometalating ligands are reported. The peak external quantum efficiencies of 7.1%, 20.0%, 14.0%, 4.0%, and 16.0% are achieved for deep-blue, green, red, near-infrared, and white phosphorescent organic light-emitting diodes, respectively, by using these iridium(III) complexes.
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页数：10
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