CAS Number 1808158-41-9
TmCzTRZ is methyl substituted TCzTRZ at 3,6-positions of carbazole units. Due to the electron-donating nature of the methyl groups, TmCzTRZ has relatively higher HOMO energy level than TCzTRZ.
TmCzTRZ is a bipolar TADF green emitter with three electron rich 3,6-dimethylcarbazole and one electron deficient 1,3,5-triazine units. Like TCzTRZ, TmCzTrz has a calculated photoluminescence quantum yield (PLQY) of 100% in DPEPO host. An external quantum efficiency (EQE) of over 25% external quantum efficiency has been achieved in a green light emitting device with 30 wt% DPEPO used as host [1].
| CAS number | 1808158-41-9 |
|---|---|
| Full name | 9,9',9''-(5-(4,6-Diphenyl-1,3,5-triazin-2-yl)benzene-1,2,3-triyl) tris(3,6-dimethyl-9H-carbazole) |
| Chemical formula | C63H48N6 |
| Molecular weight | 889.10 g/mol |
| Absorption | λmax 447 nm (in toluene) |
| Phosphorescene | λmax 500 nm (in film) |
| HOMO/LUMO | HOMO = 5.19 eV, LUMO = 2.11 eV [1] |
| Synonyms | TmCz-TRZ |
| Classification / Family | Triazine derivatives, Light-emitting diodes, Organic electronics, TADF green emitter, PHOLEDs host materials, Sublimed materials. |
| Purity | Sublimed >99.0% (HPLC) |
|---|---|
| Melting point | Tg = 205.0 ℃, Tm = 427.9 ℃, Td (Temperature at 5% weight loss) = 436.1 ℃. |
| Appearance | Deep 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 9,9',9''-(5-(4,6-Diphenyl-1,3,5-triazin-2-yl)benzene-1,2,3-triyl) tris(3,6-dimethyl-9H-carbazole) (TmCzTRZ), CAS# 1808158-41-9.
| Device structure | ITO/PEDOT:PSS (60 nm)/TAPC (20 nm)/mCP (10 nm)/30 wt% DPEPO:TmCzTRZ (25 nm)/TSPO1 (5 nm)/TPBI (20 nm)/LiF (1 nm)/Al (200 nm) [1] |
|---|---|
| Colour |
 Green
|
| Max. Power Efficiency | 52.1 lm W-1 |
| Max. Current Efficiency | 18.6 cd/A |
| Max. EQE | 25.5% |
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