B4PymPm is an isomer to B2PymPm and B3PymPm. It has a 2-methylpyrimidine core structure with four pyridine pendants. It is electron-deficient and can be used in OLEDs and photovoltaics (e.g. perovskite solar cells) as an electron-transporting or hole-blocking layer material.

Due to its intermolecular hydrogen bonding, B4PymPm molecules self-assemble in a horizontal orientation - parallel to the substrate, with a significantly large anisotropy. This self-assembly gives high molecular stacking in films with high π-orbital overlaps, which can significantly enhance charge-carrier mobility and transport.

General Information

CAS number	1030380-51-8
Full name	4,6-Bis(3,5-di(pyridin-4-yl)phenyl)-2-methylpyrimidine, 4,6-Bis(3,5-di-4-pyridinylphenyl)-2-methylpyrimidine
Chemical formula	C37H26N6
Molecular weight	554.64 g/mol
Absorption	λmax 250 nm in DCM
Fluorescence	λmax 410 nm in Film
HOMO/LUMO	4,6-Bis(3,5-di-4-pyridinylphenyl)-2-methylpyrimidine
Classification / Family	Pyrimidine derivatives, Highly efficient light-emitting diodes, Organic electronics, Electron-transport layer (ETL) materials, Hole-blocking layer (HBL) materials, Sublimed materials.

Product Details

Purity	Sublimed >99.0% (HPLC)
Melting point	374 °C (lit.)
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)/HAT-CN (10 nm)/TAPC (40 nm)/TCTA (10 nm)/mCP (10 nm)/mCP:B4PyMPM:15 wt% FIrpic (20 nm)/B4PyMPM (50 nm)/Liq (0.8 nm)/Al (120 nm) [2]
Colour	Blue
Max. Power Efficiency	79.8 lm W−1
Max. Current Efficiency	41.3 cd/A
Max. EQE	17.3%

Device structure	ITO (110 nm)/TAPC (40 nm)/TCTA (10 nm)/mCP (10 nm)/mCP:50 wt% B4PyMPM:15 wt% FIrpic:0.2 wt% PO-01* (20 nm)/B4PyMPM (50 nm)/Liq (0.8 nm)/Al (120 nm) [2]
Colour	White
Max. Power Efficiency	105.0 lm W−1
Max. Current Efficiency	83.6 cd/A
Max. EQE	28.1%

Device structure	ITO (70 nm)/TAPC (75 nm)/TCTA (10 nm)/ TCTA:B4PYMPM:8 wt% Ir(ppy)2tmd (30 nm)/B4PYMPM (50 nm)/LiF (0.7 nm)/Al (100 nm) [3]
Colour	Yellow
Max. Power Efficiency	152.5 lm W−1
Max. EQE	30.4%

Device structure	ITO/HAT-CN (5 nm)/TAPC (30 nm)/TCTA (8 nm)/26DCzPPy:PO-01 (4 wt%, 2 nm)/26DCzPPy:B4PyMPM:FIrpic (1:1, 15 wt%, 20 nm)/B4PyMPM (15 nm)/Bphen:LiH 0.1 wt% (25 nm)/Al (120 nm) [4]
Colour	White
Max. Power Efficiency	95.5 lm W−1
Max. Current Efficiency	82.0 cd/A
Max. EQE	28.5%

*For chemical structure information, please refer to the cited references

Pricing

Grade	Order Code	Quantity	Price
Sublimed (>99.0% purity)	M2175A1	250 mg	£266.00
Sublimed (>99.0% purity)	M2175A1	500 mg	£426.00
Sublimed (>99.0% purity)	M2175A1	1 g	£682.00

MSDS Documentation

B4PymPm MSDS sheet

Literature and Reviews

1. Influence of Substituted Pyridine Rings on Physical Properties and Electron Mobilities of 2-Methylpyrimidine Skeleton-Based Electron Transporters, H, Sasabe et al., Adv. Funct. Mater., 21, 336–342 (2011); DOI: 10.1002/adfm.201001252.
2. White Organic LED with a Luminous Efficacy Exceeding 100 lm W−1 without Light Out-Coupling Enhancement Techniques, S. Wu et al., Adv. Funct. Mater., 27, 1701314 (2017); DOI: 10.1002/adfm.201701314.
3. Highly Efficient, Conventional, Fluorescent Organic Light-Emitting Diodes with Extended Lifetime, H. Kim et al., Adv. Mater., 29, 1702159 (2017); DOI: 10.1002/adma.201702159.
4. High-Performance White Organic Light-Emitting Diodes with Simplified Structure Incorporating Novel Exciplex-Forming Host, Q. Tian et al., ACS Appl. Mater. Interfaces, 10, 39116−39123 (2018); DOI: 10.1021/acsami.8b17737.
5. Development of high performance OLEDs for general lighting, H. Sasabe et al., J. Mater. Chem. C, 1, 1699 (2013); DOI: 10.1039/c2tc00584k.

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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.

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