Charge Transport Layer Materials, Electron Transport Layer Materials, High Purity Sublimed Materials
Bis(10-hydroxybenzo[h]quinolinato)beryllium, known as Bebq2, is the brother of Bepp2 in the Beryllium complex family. It is also a blue-fluorescence emitter with excellent charge transport ability.
When compared with Alq3 as an electron-transport material, Bebq2 was proven to be superior, even though the ionisation potential and optical band gap of Bebq2 (5.5 eV and 2.7 eV respectively) and Alq3 (5.6 eV and 2.8 eV respectively) are almost the same. The best use for Bebq2 is not as an emitting-layer material or a host material (even though it is a widely used host material), but as an electron-transport material [1].
| CAS number | 148896-39-3 |
|---|---|
| Chemical formula | C26H16BeN2O2 |
| Molecular weight | 397.43 g/mol |
| Absorption* | λmax 406 nm |
| Fluorescence | λem 440 nm (DCM) |
| HOMO/LUMO | HOMO = 5.5 eV, LUMO = 2.8 eV |
| Synonyms |
|
| Classification / Family | Blue emitter, Electron-transport layer materials (ETL), Hole-blocking layer materials (HBL), Organic light-emitting diode (OLED), Organic electronics |
* Measurable with an USB spectrometer, see our spectrometer application notes.
| Purity | >99% (sublimed) |
|---|---|
| Thermogravimetric Analysis (TGA) | 434 °C (5% weight loss) |
| Differential Scanning Calorimetry (DSC) | 364.9 °C |
| Colour | Yellow powder/crystals |
* Sublimation is a technique used to obtain ultra pure-grade chemicals, see sublimed materials.
![Chemical Structure of Bis(10-hydroxybenzo[h]quinolinato)beryllium (Bebq2)](https://m.syrdjt.com/public/uploads/image/20250117/6789f82c7fc95.jpg)
Chemical Structure of Bis(10-hydroxybenzo[h]quinolinato)beryllium (Bebq2)
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