Citation: Jiaqi LI, Yeting WANG, Xin XIE, Ying WANG, Mo XIE, Yong CHEN. Metal-perturbed deep-blue multi-resonance thermally activated delayed fluorescence and phosphorescence dual emission in Au(Ⅰ) complexes[J]. Chinese Journal of Inorganic Chemistry, ;2026, 42(11): 2399-2410. doi: 10.11862/CJIC.20260209 shu

Metal-perturbed deep-blue multi-resonance thermally activated delayed fluorescence and phosphorescence dual emission in Au(Ⅰ) complexes

Jiaqi LI ^{1, 2} ,
Yeting WANG ³ ,
Xin XIE ^{1, 2} ,
Ying WANG ^{1, 2} ,
Mo XIE ^3,, ,
Yong CHEN ^{1, 2,,}

1.
Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
2.
University of Chinese Academy of Sciences, Beijing 100049, China
3.
College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, China

Corresponding author: Mo XIE, Yong CHEN, chenyong@mail.ipc.ac.cn
Received Date: 30 June 2026
Revised Date: 14 September 2026

Figures(5)

We report a class of Au(Ⅰ)-based multi-resonance thermally activated delayed fluorescence (MR-TADF) emitters designed for deep blue emission [(PzIPr)AuOBO and (SIPr)AuOBO], which exhibited a substantially shortened delayed lifetime and a narrow full width at half maximum (FWHM=40 nm). Remarkably, dual emission from both TADF and phosphorescence was observed in these MR-TADF complexes. The photoluminescence quantum yield (PLQY) of the emitters reached up to 0.99, a result attributed to the Au(Ⅰ)-activated triplet radiative transfer pathway. Solution-processed organic light-emitting diode (OLED) devices fabricated with (PzIPr)AuOBO delivered deep blue emission with CIE coordinates of (0.15, 0.07) and a maximum external quantum efficiency (EQE) of 7.0%.
- Au(Ⅰ) complexes,
- deep blue,
- multi-resonance thermally activated delayed fluorescence,
- dual emission
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沈阳化工大学材料科学与工程学院沈阳 110142