| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1264276 | Organic Electronics | 2016 | 5 Pages |
•A deep blue thermally activated delayed fluorescent emitter with a y color coordinate below 0.15.•A high quantum efficiency close to 20% in deep blue thermally activated delayed fluorescent device.•Rigid acceptor moiety to narrow the emission spectrum of blue thermally activated delayed fluorescent emitter.
A thermally activated delayed fluorescent (TADF) emitter, 2,7-bis(9,9-dimethylacridin-10(9H)-yl)-9,9-dimethyl-9H-thioxanthene 10,10-dioxide (DMTDAc), was developed as a deep blue TADF emitter using a rigid 9,9-dimethyl-9H-thioxanthene 10,10-dioxide (DMTD) acceptor and an acridine donor. The rigid DMTD acceptor narrowed emission spectrum of DMTDAc by interlocking two phenyl units of diphenylsulfone. A deep blue TADF device with an external quantum efficiency close to 20% with a deep blue color coordinate of (0.15,0.13) was provided using the DMTDAc TADF emitter.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slide
