3P-T2T, or 2,4,6-tris(2-(1H-pyrazol-1-yl)phenyl)-1,3,5-triazine (CAS 352196-01-1), is a triazine-based organic semiconductor supplied as a sublimed off-white powder or crystals with >99.0% purity (HPLC). It is typically deposited as the electron transport layer (ETL) in OLED stacks, in the same family as PO-T2T and 3N-T2T.
Its electron-poor triazine core carries three phenylpyrazole arms. The electron-withdrawing pyrazolyl groups give 3P-T2T stronger electron transport and injection than T2T. Beyond ETL use, it serves as a host for green, yellow and red phosphorescent emitters and can also accommodate blue emission.
Paired with the hole-transporting donor TCTA, 3P-T2T acts as an acceptor that forms an exciplex emitting efficient yellow delayed fluorescence. The TCTA:3P-T2T system offers high, balanced hole and electron mobilities and large energy-level offsets at the interface, making it useful as a TADF exciplex co-host.
- Electron transport layer in OLED devices.
- Host material for green, yellow and red phosphorescent emitters in PHOLEDs.
- Acceptor with TCTA to form yellow delayed-fluorescence exciplex emitters.
- Exciplex co-host for red OLEDs doped with DCJTB.
- Electron transport layer in green TADF devices based on 4CzIPN.
| Brand | Ossila |
|---|---|
| CAS number | 352196-01-1 |
| Molecular formula | C30H21N9 |
| Purity | Sublimed >99.0% (HPLC) |
| Category | — |
| Pack sizes | 100 mg, 250 mg, 500 mg, 1 g |
| Physical form | Off-white powder/crystals |
| Storage | — |
- Product code: M2273A1
- Molecular weight: 507.56 g/mol
- Full chemical name: 2,4,6-tris(2-(1H-pyrazol-1-yl)phenyl)-1,3,5-triazine
- Absorption: λmax 267 nm (in film)
- Fluorescence: λem 415 nm (in film)
- HOMO/LUMO: HOMO = 6.43 eV, LUMO = 2.98 eV; ET = 2.85 eV
- Thermal properties: Td = 352 °C, Tg = 64 °C (lit.)
- Classification: Triazine derivatives, TADF exciplex co-host, Phosphorescent host, Electron transporting layer (ETL), Sublimed materials
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