CAS Number 440354-93-8
Cab-Ph-TRZ is ambipolar in nature, with triazine as electron-deficient and carbazole as electron-rich moieties.
Cab-Ph-TRZ is typically used as a phosphorescent host material for green and red light-emitting diodes. Compared to CBP - 4,4′-Bis(N-carbazolyl)-1,1′-biphenyl as a host material, Cab-Ph-TRZ shows higher power efficiencies with lower driving voltage, thanks to its bipolar nature.
| CAS number | 440354-93-8 |
|---|---|
| Full name | 9-(4-(4,6-Diphenyl-1,3,5-triazin-2-yl)phenyl)-9H -carbazole |
| Chemical formula | C33H22N4 |
| Molecular weight | 474.55 g/mol |
| Absorption | λmax 262, 356 nm in DCM |
| Fluorescence | λmax 467 nm in DCM |
| HOMO/LUMO | HOMO 5.9 eV, LUMO 2.98 eV [1] |
| Synonyms | CzPhTRz, CzTRZ, Cz-Ph-TRZ, PhCzTRZ |
| Classification / Family | Triazine derivatives, Light-emitting diodes, Organic electronics, TADF blue emitter, PHOLEDs host materials, Sublimed materials. |
| Purity | Sublimed >99.0% (HPLC) |
|---|---|
| Melting point | TGA: 300 °C (0.5% weight loss) |
| Appearance | Off-white 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 Cab-Ph-TRZ, CAS 440354-93-8
| Device structure | ITO/NPB (30 nm)/TCTA (10 nm)/Cab-Ph-TRZ:Ir(ppy)2(acac)(7%; 30 nm)/TPBi (30 nm)/LiF (1 nm)/Al (100 nm) [1] |
|---|---|
| Colour |
Green 
|
| Max Current Efficiency | 55.6 cd/A |
| Max. Power Efficiency | 51.3 lm W-1 |
| Device structure | ITO/NPB (30 nm)/TCTA (10 nm)/Cab-Ph-TRZ:Ir(2-phq)3 (6%; 30 nm)/TPBi (30 nm)/LiF (1 nm)/Al (100 nm) [1] |
|---|---|
| Colour |
Red 
|
| Max Current Efficiency | 28.72 cd/A |
| Max. Power Efficiency | 22.85lm W-1 |
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