Fully Bridged Triphenylamine Derivatives as Color-Tunable Thermally Activated Delayed Fluorescence Emitters

Sheng-Nan Zou; Chen-Chen Peng; Sheng-Yi Yang; Yang-Kun Qu; You-Jun Yu; Xing Chen; Zuo-Quan Jiang; Liang-Sheng Liao

doi:10.1021/acs.orglett.0c04159

Fully Bridged Triphenylamine Derivatives as Color-Tunable Thermally Activated Delayed Fluorescence Emitters

Org Lett. 2021 Feb 5;23(3):958-962. doi: 10.1021/acs.orglett.0c04159. Epub 2021 Jan 13.

Authors

Sheng-Nan Zou¹, Chen-Chen Peng¹, Sheng-Yi Yang¹, Yang-Kun Qu¹, You-Jun Yu¹, Xing Chen¹, Zuo-Quan Jiang¹, Liang-Sheng Liao¹

Affiliation

¹ Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, 199 Ren'ai Road, Suzhou 215123, Jiangsu P.R. China.

PMID: 33439028
DOI: 10.1021/acs.orglett.0c04159

Abstract

Three emissive bridged-triphenylamine derivatives are designed and synthesized by incorporating carbon (DQAO), oxygen (OQAO), and sulfur (SQAO) atoms with two carbonyl groups. The fully bridged geometry and unique frontier molecular orbital distribution reveal its potential as narrowband thermally activated delayed fluorescence emitters. DQAO-, OQAO-, and SQAO-based organic light-emitting diodes exhibit the maximum external quantum efficiency (EQE_max) of 15.2%, 20.3%, and 17.8% for blue, green, and yellow, respectively.