Benzoate-based thermally activated delayed fluorescence materials

Liang Zhang; Wenjing Zhu; Kangkang Gao; Yun Wu; Yani Lu; Chao Shuai; Penghui Zhang; Huicheng Li; Chuan-Feng Chen

doi:10.1039/d3ra03289b

Benzoate-based thermally activated delayed fluorescence materials

RSC Adv. 2023 Jul 14;13(31):21296-21299. doi: 10.1039/d3ra03289b. eCollection 2023 Jul 12.

Authors

Liang Zhang¹, Wenjing Zhu¹, Kangkang Gao¹, Yun Wu¹, Yani Lu¹, Chao Shuai¹, Penghui Zhang¹, Huicheng Li¹, Chuan-Feng Chen^{2

3}

Affiliations

¹ College of Petrochemical Engineering, Longdong University Qingyang 745000 China zhang_liang1113@126.com.
² Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences Beijing 100190 China cchen@iccas.ac.cn.
³ University of Chinese Academy of Sciences Beijing 100049 China.

Abstract

Compounds PTZ-MBZ (methyl 3-(10H-phenothiazin-10-yl)benzoate) and DMAC-MBZ (methyl 3-(9,9-dimethylacridin-10(9H)-yl)benzoate) were conveniently synthesized, and they exhibited TADF properties with lifetimes of 0.80 and 2.17 μs, respectively. The spatially separated highest occupied molecular orbital and lowest unoccupied molecular orbital resulted in a very small singlet-triplet energy gap of 0.0152 eV and 0.0640 eV, respectively. Thermally activated delayed fluorescence materials with short lifetime could be used as promising luminescent materials for organic light-emitting diodes.