CAS Number 266349-83-1
BTB is used as an electron-transport material in organic light-emitting devices (OLEDs) due to its electron deficiency from the two triazine units.
With electron mobility greater than 10−4 cm2V−1 s−1, BTB demonstrates an electron mobility 10-fold greater than that of the widely-used material tris(8-hydroxyquinoline) aluminum (Alq3). OLEDs incorporating BTB as the electron transport layer exhibit lower driving voltages and higher efficiencies - relative to those incorporating Alq3.
BTB, like other electron-deficient materials (such as T2T), can be used as a phosphorescent host material for green and red light-emitting diodes.
| CAS number | 266349-83-1 |
|---|---|
| Full name | 4,4'-bis(4,6-diphenyl-1,3,5-triazin-2-yl)biphenyl, 4,4'-bis-[2-(4,6-diphenyl-1,3,5-triazinyl)]-1,10-biphenyl |
| Chemical formula | C34H28N6 |
| Molecular weight | 520.62 g/mol |
| Absorption | n.a. |
| Fluorescence | n.a. |
| HOMO/LUMO | HOMO = 6.18 eV, LUMO = 2.14 eV [1] |
| Classification / Family | Triazine derivatives, Electron-transport layer (ETL) materials, Hole-blocking layer (HBL) materials, TADF materials. |
| Purity | Sublimed > 99% (LCMS) |
|---|---|
| Melting point | 362 °C (lit.); Tg = 137 °C |
| Appearance | White crystals/powder |
Chemical structure of BTB, CAS 266349-83-1
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