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Product Code M2176A1-250mg
Price $438 ex. VAT

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B4PyPPm, ETL material for OLED devices

High-performance host for red fluorescent and phosphorescent TADF-OLEDs

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.

Chemical Structure

B4PyPPm chemical structure
Chemical structure of B4PyPPm

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 green light emitting device
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 red light emitting device
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 green light emitting device
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 green light emitting device
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 green light emitting device
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 green light emitting device
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


Grade Order Code Quantity Price
Sublimed (>99.0% purity) M2176A1 250 mg £350
Sublimed (>99.0% purity) M2176A1 500 mg £580
Sublimed (>99.0% purity) M2176A1 1 g £900

MSDS Documentation


Literature and Reviews

  1. 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.
  2. 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.
  3. 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.
  4. 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.
  5. 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.
  6. 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 information provided here is accurate. The values provided are typical at the time of manufacture and may vary over time and from batch to batch. Products may have minor cosmetic differences (e.g. to the branding) compared to the photos on our website. All products are for laboratory and research and development use only.

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