CAS Number 1469997-91-8
CbBPCb, having similar structure to the well-known host material mCBP, is a highly efficient carboline-based phosphorescent host with oligophenyl spacer. CbBPCb is bipolar, but shows a higher electron mobility of 3.83×10-6 cm2 V-1 s-1 than its hole mobility of 6.33×10-7 cm2 V-1 s-1.
With a wide bandgap and high triplet energy level, CbBPCb can achieve high quantum efficiencies of over 30.0% in blue phosphorescent organic light emitting diodes. This is due to the host-guest energy transfer, balanced charge injection / transporting and effective exciton confinement within the emitting layer [1, 2]
| CAS number | 1469997-91-8 |
|---|---|
| Chemical formula | C34H22N4 |
| Molecular weight | 486.57 g/mol |
| Absorption | λmax 240 nm, 297 nm (THF) |
| Photoluminescence | λem 382 nm (THF) |
| HOMO/LUMO | HOMO = 6.25 eV, LUMO = 2.79 eV; ET = 2.77 eV [1] |
| Chemical name | 3,3'-Di(9H-pyrido[2,3-b]-indol-9-yl)biphenyl |
| Synonyms | mCbBP |
| Classification / Family | Carboline derivatives, Phosphorescent host materials, Sublimed materials, Semiconducting small molecules |
| Purity | Sublimed >99.0% (HPLC) |
|---|---|
| Melting point | mp = 251 °C, Tg = 96 °C (lit.) |
| Appearance | Off-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 CbBPCb, CAS 1469997-91-8
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