B4PyPPm
B4PyPPM has a 2-phenylpyrimidine skeleton structure with four pyridine pendants. It exhibits superior electron injection properties and an electron mobility that is 10 times higher than those of 3-pyridine derivatives (e.g. B3PyMPM).
Like B4PymPm, B4PyPPM is electron-deficient and used as an electron transport or injection-layer material for OLED devices. Due to its electron-deficient nature, B4PyPPM can also be used with electron-donating materials to form exciplex systems. These are ideal candidates to act as high-performance hosts of both red fluorescent and phosphorescent TADF-OLEDs.
General Information
| CAS number | 1097652-83-9 |
| Full name | 4,6-Bis(3,5-di(pyridin-4-yl)phenyl)-2-phenylpyrimidine, 4,6-Bis(3,5-di-4-pyridinylphenyl)-2-phenylpyrimidine |
| Chemical formula | C42H28N6 |
| Molecular weight | 616.71 g/mol |
| Absorption | λmax 254 nm in DCM |
| Fluorescence | n.a. |
| HOMO/LUMO | HOMO = 7.15 eV, LUMO = 3.44 eV [1]; ET1 = 2.72 eV |
| Synonyms | 4,6-Bis(3,5-di-4-pyridinylphenyl)-2-phenylpyrimidine |
| Classification / Family | Pyrimidine derivatives, Highly efficient light-emitting diodes, Organic electronics, Electron-transport layer (ETL) materials, Hole-blocking layer (HBL) materials, TADF materials, Sublimed materials. |
Product Details
| Purity | Sublimed >99.0% (HPLC) |
| Melting point | 356 °C |
| Appearance | White crystals/powder |
*Sublimation is a technique used to obtain ultra pure-grade chemicals. For more details about sublimation, please refer to the Sublimed Materials for OLED Devices page.
Chemical Structure
Device Structure(s)
| Device structure | ITO (110 nm)/TPDPES*:10 wt% TBPAH (20 nm)/TAPC (30 nm)/CBP:8 wt% Ir(ppy)3 (10 nm)/B4PyPPM (50 nm)/LiF (0.5 nm)/Al (100 nm) [1] |
| Colour | Green 
|
| Power Efficiency @100 cd/cm2 | 128 lm W−1 |
| Current Efficiency @100 cd/cm2 | 105 cd/A |
| Device structure | ITO/MoO3 (1 nm)/TAPC (20 nm)/Tris-PCz* (10 nm)/Tris-PCz:B4PyPPM:3 wt% Ir(MDQ)2acac (30 nm)/B4PyPPM (50 nm)/LiF (1 nm)/Al (100 nm) [2] |
| Colour | Red 
|
| Max. Power Efficiency | 37.7 lm W−1 |
| Max. Current Efficiency | 33.7 cd/A |
| Max. EQE | 20.3% |
| Device structure | ITO (130 nm)/HATCN (1 nm)/TAPC (50 nm)/CBP:17 wt% Ir(ppy)3 (10 nm)/B4PyPPM (50 nm)/Libpp (1 nm)/Al (80 nm) [3] |
| Colour | Green
|
| Max. Power Efficiency | 125.4 lm W−1 |
| Max. Current Efficiency | 83.7 cd/A |
| Max. EQE | 23.8% |
| Device structure | ITO/PPBI (20 nm)/TAPC (20 nm)/TCTA/CBP:20 wt% 26PXZINN* (20 nm)/B4PyPPm (50 nm)/LiF (0.5 nm)/Al (100 nm) [4] |
| Colour | Green
|
| Max. Power Efficiency | 99.0 lm W−1 |
| Max. Current Efficiency | 75.6 cd/A |
| Max. EQE | 22.2% |
| Device structure | ITO (100 nm)/HATCN (1 nm)/TAPC (65 nm)/TCTA (5 nm)/20 wt% DACT-II-doped CBP (10 nm)/B4PyPPm (50 nm)/Liq (1 nm)/Al (80 nm) [5] |
| Colour | Green
|
| Max. Power Efficiency | 99.0 lm W−1 |
| Max. Current Efficiency | 75.6 cd/A |
| Max. EQE | 22.2% |
| Device structure | ITO (130 nm)/TAPC (35 nm)/TCTA (5 nm)/CBP (5 nm)/CBP doped with 5 wt% 4CzIPN (5 nm)/B4PyPPM (65 nm)/LiF (0.8 nm)/Al (100 nm) [6] |
| Colour | Green
|
| Max. Power Efficiency | 106.9 lm W−1 |
| Max. Current Efficiency | 83.2 cd/A |
| Max. EQE | 25.7% |
*For chemical structure information, please refer to the cited references
Pricing
| Grade | Order Code | Quantity | Price |
| Sublimed (>99.0% purity) | M2176A1 | 250 mg | £266.00 |
| Sublimed (>99.0% purity) | M2176A1 | 500 mg | £426.00 |
| Sublimed (>99.0% purity) | M2176A1 | 1 g | £682.00 |
MSDS Documentation
B4PyPPm MSDS sheetLiterature and Reviews
- 2-Phenylpyrimidine skeleton-based electron-transport materials for extremely efficient green organic light-emitting devices, H. Sasabe et al., Chem. Commun., 5821–5823 (2008); DOI: 10.1039/b812270a.
- High-performance red organic light-emitting devices based on an exciplex system with thermally activated delayed fluorescence characteristic, S. Yuan et al., Org. Electrn., 39, 10-15 (2016); DIO: 10.1016/j.orgel.2016.09.020.
- Extremely Low Operating Voltage Green Phosphorescent Organic Light-Emitting Devices, H. Sasabe et al., Adv. Funct. Mater., 23, 5550–5555 (2013); DOI: 10.1002/adfm.201301069.
- High Power Efficiency Blue-to-Green Organic Light-Emitting Diodes Using Isonicotinonitrile-Based Fluorescent Emitters, H. Sasabe et al., Chem. Asian J., 12, 648 – 654 (2017); DOI : 10.1002/asia.201601641.
- Ultrahigh Power Efficiency Thermally Activated Delayed Fluorescent OLEDs by the Strategic Use of Electron-transport Materials, H. Sasabe et al., Adv. Optical Mater., 6, 1800376 (2018); DOI: 10.1002/adom.201800376.
- High-Performance Green OLEDs Using Thermally Activated Delayed Fluorescence with a Power Efficiency of over 100 lm W−1, Y. Seino et al., Adv. Mater., 28, 2638–2643 (2016); DOI: 10.1002/adma.201503782.
To the best of our knowledge the technical information provided here is accurate. However, Ossila assume no liability for the accuracy of this information. The values provided here are typical at the time of manufacture and may vary over time and from batch to batch.