Journal
JOURNAL OF MATERIALS CHEMISTRY C
Volume 10, Issue 12, Pages 4905-4913Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1tc05730h
Keywords
-
Funding
- JSPS KAKENHI from the MEXT (Ministry of Education, Culture, Science and Technology, Japan) [JP19H05716]
- JSPS KAKENHI [JP20H02813, JP21K18960]
- Asahi Glass Foundation
- Mitsubishi Foundation
- VILLUM FONDEN [00028053]
- Polish National Science Centre funding [2017/25/B/ST5/02488]
- Silesian University of Technology [32/014/SDU/10-22-14, 04/040/RGJ21/0149]
- EU's Horizon 2020 [778158]
- Polish Ministry of Education and Science
- EU's Horizon 2020 ERA-Chair project ExCEED [952008]
Ask authors/readers for more resources
This study systematically investigated the effects of regioisomerism and substituents on the excited state of a molecular scaffold, and explored the emission behavior of the developed compounds in TADF and RTP. The results showed that the developed emitters achieved high external quantum efficiencies in RTP-based OLEDs.
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; D = dihydrophenazasiline) on the fate of its excited state have been performed. The study revealed that regioisomerism clearly affects the emission behavior of the D-A-D compounds. Moreover, distinct differences in TADF, dual TADF & RTP, and dual RTP were observed, depending on the host used. Furthermore, organic light-emitting diodes (OLEDs) fabricated with the developed emitters achieved high external quantum efficiencies (EQEs) of up to 7.4% for RTP-based OLEDs.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available