Charge Transport Layer Materials, Electron Injection Layer Materials, Electron Transport Layer Mater
1,3-bis[2-(4-tert-butylphenyl)-1,3,4-oxadiazo-5-yl]benzene (OXD-7) is a well known electron-transporting material due to the electron-accepting property of the oxadiazole units. Together with poly(9-vinylcarbazole) (PVK, electron donating), OXD-7 (electron withdrawing) is the most widely used hybrid-type host due to its good solubility and film morphology by the bulky tert-butyl units.
OXD-7 has also been used as an ultraviolet emitter, with MoO3 as hole injection and buffer material showing relatively high external quantum efficiency [1].
| CAS number | 138372-67-5 |
|---|---|
| Chemical formula | C30H30N4O2 |
| Molecular weight | 478.58 g/mol |
| Absorption | λmax 292 (THF) |
| Fluorescence | λem 347 nm (THF) |
| HOMO/LUMO | HOMO = 6.5 eV, LUMO = 3.0 eV |
| Synonyms |
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| Classification / Family |
Electron-injection materials, Electron transporting materials, Phosphorescent host materials, Organic light-emitting diodes, Organic electronics |
| Purity | > 99.0% (sublimed) |
|---|---|
| Melting point | 241 °C (lit.) |
| Colour | White powder/crystals |
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