3-(Biphenyl-4-yl)-5-(4-tert-butylphenyl)-4-phenyl-4H-1,2,4-triazole
1,2,4-triazole-based 3-(biphenyl-4-yl)-5-(4-tertbutylphenyl)-4-phenyl-4H-1,2,4-triazole (TAZ) (ET: 2.7 eV, HOMO/LUMO: 6.3/2.7 eV) has mostly been used in blue phosphorescent OLEDs (PhOLEDs) to serve as an efficient electron-transporting and hole-blocking layer due to its high triplet energy level that would confine the triplet excitons within the emissive layer.
The low HOMO/LUMO energy level of TAZ is beneficial for blocking holes and facilitating electron injection/transport, thereby enhancing the device performance.
| CAS Number | 150405-69-9 |
|---|---|
| Chemical Formula | C30H27N3 |
| Molecular Weight | 429.56 g/mol |
| Absorption | λmax 280 nm in chloroform |
| Fluorescence | λem 372 nm in chloroform |
| HOMO/LUMO | HOMO = 6.3 eV, LUMO = 2.7 eV [1] |
| Synonyms |
TAZ |
| Classification / Family | Triazole derivatives, Electron-injection layer materials (EIL), Electron-transport layer materials (ETL), Hole-blocking layer materials (HBL), Phosphorescent host materials, Organic light-emitting diodes (OLEDs), Organic electronics. |
| Purity | >99.0% (sublimed) |
|---|---|
| Melting Point | 231 – 235 °C (lit.) |
| Appearance | 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 3-(Biphenyl-4-yl)-5-(4-tert-butylphenyl)-4-phenyl-4H-1,2,4-triazole (TAZ)专业代理国外知名镊子品牌
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