B3PymPm, or 4,6-Bis(3,5-di(pyridin-3-yl)phenyl)-2-methylpyrimidine (CAS 925425-96-3), is an organic semiconductor for OLED research. Its structure combines a 2-methylpyrimidine core with four pyridine pendant groups, and it is an isomer of B2PymPm and B4PymPm. Because the molecule is electron-deficient, it serves well as an electron-transport layer (ETL) or hole-blocking layer (HBL) material.
Hydrogen bonding occurs both within and between B3PymPm molecules. This bonding is thought to improve film morphology, which in turn supports higher charge mobility in deposited layers.
B3PymPm is also combined with TCTA as an exciplex-forming co-host in thermally activated delayed fluorescence (TADF) devices, enabling highly efficient fluorescent OLEDs. It is offered in sublimed grade at >99.0% (HPLC) purity and in unsublimed grade at >98.0% purity, supplied as white crystals or powder.
- Electron-transport layer material in OLED device stacks.
- Hole-blocking layer material in organic light-emitting diodes.
- Exciplex-forming co-host paired with TCTA in TADF devices.
- Research on highly efficient green, yellow and orange phosphorescent OLEDs.
- Organic electronics studies of film morphology and charge mobility.
| Brand | Ossila |
|---|---|
| CAS number | 925425-96-3 |
| Molecular formula | C37H26N6 |
| Purity | Sublimed >99.0% (HPLC), unsublimed >98.0% |
| Category | — |
| Pack sizes | — |
| Physical form | White crystals/powder |
| Storage | — |
- Product code: M2174A2
- Full name: 4,6-Bis(3,5-di(pyridin-3-yl)phenyl)-2-methylpyrimidine
- Molecular weight: 554.64 g/mol
- Absorption: λ max 248 nm in DCM
- HOMO/LUMO: HOMO = 6.97 eV, LUMO = 3.53 eV; ET1 = 3.08 eV
- Melting point: 326 °C
- Classification: Pyrimidine derivatives, ETL materials, HBL materials, Sublimed materials
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