A simple and effective strategy to lock the quasi-equatorial conformation of acridine by H-H repulsion for highly efficient thermally activated delayed fluorescence emitters

Danyang Chai; Xuan Zeng; Xiaoxuan Su; Changjiang Zhou; Yang Zou; Cheng Zhong; Shaolong Gong; Chuluo Yang

doi:10.1039/c9cc09769d

A simple and effective strategy to lock the quasi-equatorial conformation of acridine by H-H repulsion for highly efficient thermally activated delayed fluorescence emitters

Chem Commun (Camb). 2020 Feb 20;56(15):2308-2311. doi: 10.1039/c9cc09769d.

Authors

Danyang Chai¹, Xuan Zeng², Xiaoxuan Su¹, Changjiang Zhou¹, Yang Zou¹, Cheng Zhong², Shaolong Gong², Chuluo Yang³

Affiliations

¹ Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, People's Republic of China. yangzou@szu.edu.cn clyang@szu.edu.cn.
² Hubei Key Lab on Organic and Polymeric Optoelectronic Materials, Department of Chemistry, Wuhan University, Wuhan, 430072, People's Republic of China. clyang@whu.edu.cn.
³ Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, People's Republic of China. yangzou@szu.edu.cn clyang@szu.edu.cn and Hubei Key Lab on Organic and Polymeric Optoelectronic Materials, Department of Chemistry, Wuhan University, Wuhan, 430072, People's Republic of China. clyang@whu.edu.cn.

PMID: 31989129
DOI: 10.1039/c9cc09769d

Abstract

A novel electron donor, namely, TMDBP is designed by angularly fusing two acridine moieties. The DMAC subunits in TMDBP exhibit a dominant quasi-equatorial conformation due to steric H-H repulsion. The new TADF emitters render excellent OLED performances with EQE up to 24.2% and small efficiency roll-off.