PPCzTRz
CAS Number 2329651-89-8
Blue Dopant Materials, Dopant Materials, Materials, OLED Materials, Semiconducting Molecules, TADF Materials
PPCzTRz for High Efficiency and Stability Devices
Triplet-exciton-distributed (TED) TADF blue emitter
Specifications | MSDS | Literature and Reviews
PPCzTrz, or 9-(5'-(4,6-Diphenyl-1,3,5-triazin-2-yl)-[1,1':3',1''-terphenyl]-2'-yl)-3,6-diphenyl-9H-carbazole in full, is a TADF blue emitter. It has a typical D-π-A type structure consisting of an electron donating 3,6-diphenyl-9H-carbazole, an electron accepting 4,6-dipneyl-triazine, and a phenyl π linker inbetween. With two phenyl groups attached at meta-positions to each of the electron donating, accepting and π linker units, PPCzTrz is nonplanar with increased steric hindrance in structure to effectively weaken intermolecular forces.
By exploring two TADF materials, one distributing and one emitting, a triplet-exciton-distributed (TED) TADF device based on PPCzTrz as the assistant dopant and v-DABNA as the terminal emitter demonstrates:
- A high external quantum efficiency of 33.5%
- A color coordinate corrected current efficiency of 364 cd A–1
- A long operational device lifetime (LT50, 50% of initial luminance) of 9500 h at 100 cd m–2
- A y color coordinate below 0.10
The TED-TADF mechanism involves singlet excitons being transferred from the host to the emitter via the distributing TADF material by cascade energy transfer, whereas the triplet excitons are transferred to the emitter as singlet excitons by a triplet-exciton recycling process between the low-triplet-energy host and the distributing TADF material.
General Information
| CAS Number | 2329651-89-8 |
|---|---|
| Full Name | 9-(5'-(4,6-Diphenyl-1,3,5-triazin-2-yl)-[1,1':3',1''-terphenyl]-2'-yl)-3,6-diphenyl-9H-carbazole |
| Chemical Formula | C57H38N4 |
| Molecular Weight | 778.94 g/mol |
| Absorption* | λmax 444 nm in toluene |
| Fluorescence | λem n.a. |
| HOMO/LUMO | HOMO = 5.602 eV, LUMO = 2.657 eV |
| Classification or Family | Carbazole, Triazine, TADF Blue Emitters, TED-TADF |
Product Details
| Purity | >98.0% (1H NMR) |
|---|---|
| Melting Point | Tg = 166 °C, Td = 466.3 °C |
| Appearance | Yellow powder/crystals |
Chemical Structure
MSDS Documentation
PPCzTRz MSDS sheetLiterature and Reviews
- S. Jeon et al. (2021); High-efficiency, long-lifetime deep-blue organic light-emitting diodes, Nat. Photonics, 15, 208–215; DOI: 10.1038/s41566-021-00763-5.
- J. Wang et al. (2024); Promising interlayer sensitization strategy for the construction of high-performance blue hyperfluorescence OLEDs, Light Sci. Appl., 13, 139; DOI: 10.1038/s41377-024-01490-6.
- Y. Zhang et al. (2023); High-efficiency all fluorescence white OLEDs with high color rendering index by manipulating excitons in co-host recombination layers, Nanoscale, 15, 14249-14256; DOI: 10.1039/D3NR02568C.