Name: B4PyPPm
SKU: 59887

B4PyPPm, ETL material for OLED devices

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

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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. ).

Like , 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	λ_max 254 nm in DCM
Fluorescence	n.a.
HOMO/LUMO	HOMO = 7.15 eV, LUMO = 3.44 eV [1]; E_T1 = 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 .

Chemical Structure

Chemical structure of B4PyPPm

Device Structure(s)

Device structure	ITO (110 nm)/TPDPES:10 wt% TBPAH (20 nm)/ (30 nm)/:8 wt% (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)/ (20 nm)/Tris-PCz* (10 nm)/: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)/ (1 nm)/ (50 nm)/:17 wt% (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)/ (20 nm)//: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)/ (1 nm)/ (65 nm)/TCTA (5 nm)/20 wt% DACT-II-doped (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)/ (35 nm)/TCTA (5 nm)/ (5 nm)/ doped with 5 wt% (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	[[price gbp="350"]]
Sublimed (>99.0% purity)	M2176A1	500 mg	[[price gbp="580"]]
Sublimed (>99.0% purity)	M2176A1	1 g	[[price gbp="900"]]

MSDS Documentation

Literature 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.