Two Novel Neutral Cyclometalated iridium(III) Complexes Based on 10,11,12,13-Tetrahydrodibenzo[a, C]phenazine for Efficient Red Electroluminescences

Zizhan Jiang; Han Zhao; Weiqiao Zhou; Qin Zeng; Zihao Zhang; Junjie Jiang; Yongyang Gong; Yanqin Miao; Song Guo; Yuanli Liu

doi:10.20944/preprints202305.1801.v1

A peer-reviewed article of this Preprint also exists.

Yang, Y.; Zhao, H.; Zhou, W.; Zeng, Q.; Zhang, Z.; Jiang, J.; Gong, Y.; Miao, Y.; Guo, S.; Liu, Y. Two Novel Neutral Cyclometalated Iridium(III) Complexes Based on 10,11,12,13-Tetrahydrodibenzo[a,c]phenazine for Efficient Red Electroluminescence. Molecules 2023, 28, 4865. Yang, Y.; Zhao, H.; Zhou, W.; Zeng, Q.; Zhang, Z.; Jiang, J.; Gong, Y.; Miao, Y.; Guo, S.; Liu, Y. Two Novel Neutral Cyclometalated Iridium(III) Complexes Based on 10,11,12,13-Tetrahydrodibenzo[a,c]phenazine for Efficient Red Electroluminescence. Molecules 2023, 28, 4865.

Abstract

Two novel neutral phosphorescent iridium(III) complexes (Ir1 and Ir2) were rationally designed and synthesized with high yields using 10,11,12,13-tetrahydrodibenzo[a,c]phenazine as the main ligand. The two complexes showed bright red phosphorescence (625 nm for Ir1, and 620 nm for Ir2, in CH2Cl2), high luminescence quantum efficiency (0.32 for Ir1, and 0.35 for Ir2), obvious solvatochromism and good thermostability. Then, they were used to fabricate high-efficiency red OLEDs via vacuum evaporation, the maximum CE, PE, and EQE of the red devices based on Ir1 and Ir2 are 13.47/15.22 cd/A, 10.35/12.26 lm/W, and 10.08/7.48%, respectively.

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Two Novel Neutral Cyclometalated iridium(III) Complexes Based on 10,11,12,13-Tetrahydrodibenzo[a, C]phenazine for Efficient Red Electroluminescences

Abstract

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Subject

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