Organic electroluminescence device and monoamine compound for organic electroluminescence device
申请人:Samsung Display Co., Ltd.
公开号:US11489125B2
公开(公告)日:2022-11-01
An organic electroluminescence device of an embodiment includes a first electrode, a second electrode provided on the first electrode, and a plurality of organic material layers provided between the first electrode and the second electrode, wherein at least one organic material layer among the plurality of organic material layers include a monoamine compound, and the monoamine compound includes a core structure including two condensed rings which are combined to form a spiro structure, where each condensed ring has a condensed structure of three or more pentagonal or hexagonal rings. High emission efficiency may be achieved.
The regioisomeric effect on the excited-state fate leading to room-temperature phosphorescence or thermally activated delayed fluorescence in a dibenzophenazine-cored donor–acceptor–donor system
作者:Takumi Hosono、Nicolas Oliveira Decarli、Paola Zimmermann Crocomo、Tsuyoshi Goya、Leonardo Evaristo de Sousa、Norimitsu Tohnai、Satoshi Minakata、Piotr de Silva、Przemyslaw Data、Youhei Takeda
DOI:10.1039/d1tc05730h
日期:——
Exploring the design principle for switching between thermally activated delayed fluorescence (TADF) and room temperature phosphorescence (RTP) is a fundamentally important research to develop triplet-mediated photofunctional organic materials. Herein systematic studies on the regioisomeric and substituent effects in a twisted donor–acceptor–donor (D–A–D) molecular scaffold (A = dibenzo[a,j]phenazine;