Fused twin-acridine scaffolds as electron donors for thermally activated delayed fluorescence emitters: controllable TADF behavior by methyl substitution

Danyang Chai; Yang Zou; Yepeng Xiang; Xuan Zeng; Zhanxiang Chen; Shaolong Gong; Chuluo Yang

doi:10.1039/c9cc08679j

Fused twin-acridine scaffolds as electron donors for thermally activated delayed fluorescence emitters: controllable TADF behavior by methyl substitution

Chem Commun (Camb). 2019 Dec 28;55(100):15125-15128. doi: 10.1039/c9cc08679j. Epub 2019 Nov 29.

Authors

Danyang Chai¹, Yang Zou¹, Yepeng Xiang², Xuan Zeng², Zhanxiang Chen², 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: 31782442
DOI: 10.1039/c9cc08679j

Abstract

Fused twin-acridine scaffolds of TMQAC and MeTMQAC were designed as novel donors to construct new organic emitters. TMQAC-based emitters were TADF active, while the TADF character was turned off in MeTMQAC-based emitters by the extra methyl group. The TMQAC-based emitters exhibited high OLED performances, with external quantum efficiencies (EQEs) of up to 20.7%.