Charge Transport Layer Materials, Electron Transport Layer Materials, Fluorescent Host Materials
DPEPO, with steric ortho-substituted diphenylphosphine oxide (DPPO) groups, is one of the most popular large band-gap materials used to host blue TADF-based OLEDs.
This substitution with electron-withdrawing DPPO moieties not only improves its thermal and morphological stability, but also makes DPEPO an electron-transport layer material. Because of its deep HOMO energy level, DPEPO also acts as a hole-blocking layer material in TADF-OLED devices.
| CAS number | 808142-23-6 |
|---|---|
| Full name | Bis[2-(diphenylphosphino)phenyl]ether oxide |
| Synonyms | DPEPO |
| Chemical formula | C36H28O3P2 |
| Molecular weight | 570.55 g/mol |
| Absorption* | λmax 388 nm in CH2Cl2 |
| Fluorescence | λem 311 nm in CH2Cl2 |
| HOMO/LUMO | HOMO = 6.1 eV, LUMO = 2.0 eV; T1 = 3.0 eV [1] |
| Classification / Family | Diphenyl ether (DPE), TADF blue emitter host materials, Electron-transport layer materials (ETL), Hole-blocking layer materials (HBL), Phosphorescent organic light-emitting devices (PHOLEDs), Sublimed materials |
* Measurable with an USB Spectrometer, see our spectrometer application notes.
| Purity | Sublimed* >99.0% (HPLC) |
|---|---|
| Melting point | TGA: >320 °C (0.5% weight loss) |
| Appearance | White powder/crystals |
* Sublimation is a technique used to obtain ultra pure-grade chemicals, please refer to sublimed materials for more information.
Chemical structure of Bis[2-(diphenylphosphino)phenyl]ether oxide (DPEPO)专业代理国外知名镊子品牌
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