@article{0fc733cb2c194a94be8302af8aa72b48,
title = "From Mononuclear to Dinuclear Iridium(III) Complex: Effective Tuning of the Optoelectronic Characteristics for Organic Light-Emitting Diodes",
abstract = "Phosphorescent dinuclear iridium(III) complexes that can show high luminescent efficiencies and good electroluminescent abilities are very rare. In this paper, highly phosphorescent 2-phenylpyrimidine-based dinuclear iridium(III) complexes have been synthesized and fully characterized. Significant differences of the photophysical and electrochemical properties between the mono- and dinuclear complexes are observed. The theoretical calculation results show that the dinuclear complexes adopt a unique molecular orbital spatial distribution pattern, which plays the key role of determining their photophysical and electrochemical properties. More importantly, the solution-processed organic light-emitting diode (OLED) based on the new dinuclear iridium(III) complex achieves a peak external quantum efficiency (ext) of 14.4%, which is the highest ext for OLEDs using dinuclear iridium(III) complexes as emitters. Besides, the efficiencies of the OLED based on the dinuclear iridium(III) complex are much higher that those of the OLED based on the corresponding mononuclear iridium(III) complex.",
author = "Xiaolong Yang and Xianbin Xu and Dang, {Jing Shuang} and Guijiang Zhou and Ho, {Cheuk Lam} and Wong, {Wai Yeung}",
note = "Funding Information: This work was financially supported by the Tengfei Project from Xi{\textquoteright}an Jiaotong University, the Fundamental Research Funds for the Central Universities, the Program for New Century Excellent Talents in University, the Ministry of Education of China (NECT-09-0651), the Key Creative Scientific Research Team in Shaanxi Province (2013KCT-05), the China Postdoctoral Science Foundation (Grant 20130201110034), and the National Natural Science Foundation of China (Grants 20902072 and 21572176). W.-Y.W. acknowledges financial support from the Areas of Excellence Scheme of the University Grants Committee (AoE/P-03/08), the National Basic Research Program of China (2013CB834702), the Science, Technology and Innovation Committee of Shenzhen Municipality (JCYJ20140419130507116), Hong Kong Research Grants Council (HKBU203313), and Hong Kong Baptist University (FRG2/13-14/083). Publisher copyright: {\textcopyright} 2016 American Chemical Society",
year = "2016",
month = feb,
day = "15",
doi = "10.1021/acs.inorgchem.5b02625",
language = "English",
volume = "55",
pages = "1720--1727",
journal = "Inorganic Chemistry",
issn = "0020-1669",
publisher = "American Chemical Society",
number = "4",
}