Synthesis and Luminescence of a New Red Triplet Iridium Quinoxaline Complex

Abstract

A new iridium quinoxaline complex, [Ir(DPQ)₂(acac)] (DPQ＝2,3-diphenylquinoxaline, acac＝acetoacetone) was synthesized by reaction of 2,3-diphenylquinoxaline with iridium trichloride hydrate. The complex was characterized by elemental analysis, ¹H NMR, and mass spectroscopy. The UV-vis absorption and photoluminescence of the complex were investigated. The complex shows strong ¹MLCT (singlet metal to ligand charge-transfer) and ³MLCT (triplet metal to ligand charge-transfer) absorption at 476 and 625 nm, respectively. Organic light emitting diodes (OLED) with a configuration of [ITO/NPB (30 nm)/NPB∶7% Ir(DPQ)₂(acac)(25 nm)/PBD (10 nm)/Alq₃ (30 nm)/Mg∶Ag (10∶1)(120 nm)/Ag(10 nm)] were fabricated by using this complex as the triplet emissive dopant in NPB. The diodes showed an external quantum efficiency of 5.14% at 7.25 V and brightness of 4910 cd/m² at 17.25 V. The power efficiency of the device was 1.12 lm/W at 6.0 V, indicating that this complex is a promising electrophosphorescent material.

Key words: photoluminescence, heavy metal complex, triplet, iridium quinoxaline, OLED

Cite this article

ZHANG Guo-Lin,GUO Hai-Qing*^,1,CHUAI Yu-Tao²,ZOU De-Chun*^,2. Synthesis and Luminescence of a New Red Triplet Iridium Quinoxaline Complex[J]. Acta Chimica Sinica, 2005, 63(2): 143-147.

Export EndNote|Reference Manager|ProCite|BibTeX|RefWorks

[1]	Huimin Chen, Long Wang, Pan Zhang, Xilin Bai, Guojun Zhou. Investigation on Photoluminescence and Mechanoluminescence of Single Tb^3＋-doped Intense Green Phosphor [J]. Acta Chimica Sinica, 2023, 81(7): 771-776.
[2]	Shaoqin Zhang, Meiqing Li, Zhongjun Zhou, Zexing Qu. Theoretical Study on the Multiple Resonance Thermally Activated Delayed Fluorescence Process [J]. Acta Chimica Sinica, 2023, 81(2): 124-130.
[3]	Wentao Wang, Gaochong Zhao, Liu Yang, Yicheng Zhou, Liming Ding. Study on Multimodal Color-switching Anti-counterfeiting Based on Magnetically Responsive Photonic Crystals and Quantum Dots [J]. Acta Chimica Sinica, 2022, 80(12): 1576-1582.
[4]	Daolan Xu, Ying Yang, Wentao Fan, Zongbing He, Jiafeng Zou, Lei Feng, Man-Bo Li, Zhikun Wu. Single, Self-Born RP-Au-PR Motif Boosts 19-Fold Photoluminescence Quantum Yield of Metal Nanocluster [J]. Acta Chimica Sinica, 2022, 80(1): 1-6.
[5]	Hao-Nan Qin, Zhao-Yang Wang, Shuang-Quan Zang. Photoluminescence and Electrochemical Sensing of Atomically Precise Cu₁₃ Cluster [J]. Acta Chimica Sinica, 2021, 79(8): 1037-1041.
[6]	Tao Zhou, Yue Qian, Hongjian Wang, Quanyou Feng, Linghai Xie, Wei Huang. Recent Advances in Substituent Effects of Blue Thermally Activated Delayed Fluorescence Small Molecules [J]. Acta Chimica Sinica, 2021, 79(5): 557-574.
[7]	Jin Fengming, Dong Hongwei, Zhao Yan, Zhuang Shengli, Liao Lingwen, Yan Nan, Gu Wanmiao, Zha Jun, Yuan Jinyun, Li Jin, Deng Haiteng, Gan Zibao, Yang Jinlong, Wu Zhikun. Module Replacement of Gold Nanoparticles by a Pseudo-AGR Process [J]. Acta Chimica Sinica, 2020, 78(5): 407-411.
[8]	Qi Qige, Yang Chunfan, Xia Ye, Liu Kunhui, Su Hongmei. Photo-induced Electron Transfer between 4-Thiouracil and Tryptophan [J]. Acta Chimica Sinica, 2019, 77(6): 515-519.
[9]	He Tong, Yang Xiaofeng, Chen Yuzhe, Tong Zhenhe, Wu Lizhu. Triplet-Triplet Annihilation Upconversion Based on Silica Nanoparticles [J]. Acta Chim. Sinica, 2019, 77(1): 41-46.
[10]	Zhang Zhenyua, Li Wanjun, Ye Kaiqi, Zhang Hongyu. Synthesis, Structure and Properties of a Novel Benzothiazole-based Diboron-Bridged π-Conjugated Ladder [J]. Acta Chim. Sinica, 2016, 74(2): 179-184.
[11]	Yu Yun, Yang Jie, Ren Zichun, Xie Guohua, Li Qianqian, Li Zhen. Synthesis of Solution Processable Blue AIEgens and the Device Performance [J]. Acta Chim. Sinica, 2016, 74(11): 865-870.
[12]	Shen Cheng, Zhang Jing, Shi Dongxia, Zhang Guangyu. Photoluminescence Enhancement in Monolayer Molybdenum Disulfide by Annealing in Air [J]. Acta Chim. Sinica, 2015, 73(9): 954-958.
[13]	Xu Weigao, Zhao Yanyuan, Shen Chao, Zhang Jun, Xiong Qihua. Phonon-assisted Upconversion Photoluminescence in Monolayer MoSe₂ and WSe₂ [J]. Acta Chim. Sinica, 2015, 73(9): 959-964.
[14]	Wang Xi, Han Yide, Hao Suqin, Yu Jihong, Xu Ruren. Microwave Synthesis, Characterization and Properties of Lanthanide Phosphites Gd_xTb₂_-x(HPO₃)₃(H₂O)₂(0≤x≤2) [J]. Acta Chimica Sinica, 2012, 70(13): 1496-1500.
[15]	Zhang Jinli, Zhao Liping, Luo Xuan, Du Kai. Synthesis and Spectra Analyses of Eu(III) Binary Complexes with Polycarboxylic Acid [J]. Acta Chimica Sinica, 2012, 0(05): 679-682 .

一种新型红色三线态喹喔啉铱(Ⅲ)配合物的合成及发光性质