CAS Number 1685282-47-6
DDCzTRZ, has a bipolar structure with four electron donating carbazole moieties attached to two of the phenyl rings of an electron deficient 1,3,5-triphenyltriazine unit at meta-positions.
DDCzTRZ can also form exciplex with electron donor, i.e. DMAC-DPS for green TADF-OLED devices with high photoluminescence quantum yield and high quantum efficiency. Exciplex TADF device with DMAC-DPS:DDCzTrz as active layer materials achieved high quantum efficiency of 13.4%.
Comparing to DCzTRZ, DDCzTrz has greater stability and shows an LT80 of 52 h, while DCzTrz has an LT80 of only 5 h.
| CAS number | 1685282-47-6 |
|---|---|
| Full name | 9,9',9'',9'''-((6-Phenyl-1,3,5-triazine-2,4-diyl)bis(benzene-5,3,1-triyl))tetrakis(9H -carbazole) |
| Chemical formula | C69H43N7 |
| Molecular weight | 970.13 g/mol |
| Absorption | λmax 337 nm (in toluene) |
| Phosphorescene | λmax 461 nm (in toluene) |
| HOMO/LUMO | HOMO = 6.01 eV, LUMO = 2.90 eV [1] |
| Synonyms | 9-(3-(4-(3,5-Di(9H-carbazol-9-yl)phenyl)-6-phenyl-1,3,5-triazin-2-yl)-5-(9H-carbazol-9-yl)phenyl)-9H-carbazole |
| Classification / Family | Triazine derivatives, Light-emitting diodes, Organic electronics, TADF blue emitter, Exciplex green emitter, Sublimed materials. |
| Purity | Sublimed >99.0% (HPLC) |
|---|---|
| Melting point | Tg = 218 ℃, Td (Temperature at 5% weight loss) = 493 ℃. |
| Appearance | Pale yellow powder/crystals |
*Sublimation is a technique used to obtain ultra pure-grade chemicals. For more details about sublimation, please refer to the Sublimed Materials.
Chemical structure of DDCzTRZ, CAS 1685282-47-6
| Device structure | ITO/PEDOT:PSS/TAPC/mCP/25 wt% DDCzTRZ:DPEPO/TSPO1/TPBI/LiF/Al [1] |
|---|---|
| Colour |
 Blue
|
| Max. Current Efficiency | 31.3 cd/A |
| Max. Power Efficiency | 26.21 lm W-1 |
| Max. EQE | 18.9% |
| Device structure | ITO/MoO3/TAPC/DDCzTRZ/TmPyPb/LiF/Al [2] |
|---|---|
| Colour |
 White
|
| Max. Luminance | 18,796 cd/m2 |
| Max. Current Efficiency | 65.4 cd/A |
| Max. Power Efficiency | 68.5 lm W-1 |
| Max. EQE | 28.4% |
| Device structure | ITO/HAT-CN (100 nm)/TAPC (20 nm)/mCP: DDCzTrz (10 nm, 20%)/26DCzPPy (3 nm)/Bepp2: Ir(dmppy)2(dpp) (15 nm, 1: 2%)/Bepp2 (35 nm)/LiF (1 nm)/Al (160 nm) [2] |
|---|---|
| Colour |
White
|
| Max. Luminance | 103,756 cd/m2 |
| Max. Power Efficiency | 70.92 lm W-1 |
| Max. EQE | 23.5% |
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