loading page

Chiral dual-core AIEgens based-on through-space coupling for high-performance organic light-emitting diodes with little efficiency roll-off
  • +7
  • Lifen Chen,
  • Mingjia Deng,
  • Shao-Yun Yin,
  • Yu Fu,
  • Yingxiao Mu,
  • Jia-Xiong Chen,
  • Lingyun Cui ,
  • Shaomin Ji,
  • Yanping Huo,
  • Hao-Li Zhang
Lifen Chen
Guangdong University of Technology
Author Profile
Mingjia Deng
Guangdong University of Technology
Author Profile
Shao-Yun Yin
Guangdong University of Technology
Author Profile
Yu Fu
Guangdong University of Technology
Author Profile
Yingxiao Mu
Guangdong University of Technology

Corresponding Author:[email protected]

Author Profile
Jia-Xiong Chen
Guangdong University of Technology
Author Profile
Lingyun Cui
Beijing City University
Author Profile
Shaomin Ji
Guangdong University of Technology
Author Profile
Yanping Huo
Guangdong University of Technology
Author Profile
Hao-Li Zhang
Guangdong University of Technology
Author Profile

Abstract

In this work, we demonstrate a chiral dual-core strategy for the design of high-performance organic circularly polarized aggregation-induced emission luminogens (AIEgens), which features of connecting two thermally activated delayed fluorescence (TADF) luminophore with chiral linkage that allows efficient through-space coupling (TSC) to occur. Using this strategy, a pair of dual-core enantiomers, R/S-DNKP, were designed and synthesized by linking two benzophenone derivatives with a 1,1’-bi-2-naphthol unit. Compared to the mono-core counterpart NKP, the dual-core emitters exhibited a much higher photoluminescence quantum yields of 94%. Moreover, benefited from their chiral helical folding configurations, the R/S-DNKP enantiomers exhibited a high luminescence dissymmetry factor (|glum|) value up to 1.3×10-3 in film states. Notably, the electroluminescence devices based on the R/S-DNKP enantiomers achieved external quantum efficiency values of 21.5% and 19.7% with little roll-off. It is believed that this molecular design strategy will pave new routes for the development of high-performance chiral emitters for future organic photonic devices.
15 Nov 2023Submitted to Aggregate
16 Nov 2023Submission Checks Completed
16 Nov 2023Assigned to Editor
16 Nov 2023Reviewer(s) Assigned