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Product Code M2175A1-250mg
Price $438 ex. VAT

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B4PymPm, ETL and HBL material in OLEDs and photovoltaics

Significantly enhances charge-carrier mobility and transport


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
Synonyms 4,6-Bis(3,5-di-4-pyridinylphenyl)-2-methylpyrimidine
HOMO/LUMO

HOMO = −7.3 eV

LUMO = −3.7 eV [6]

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.

Chemical Structure

Chemical structure of B4PymPm
Chemical structure of B4PymPm

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 blue light emitting device
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 white light emitting device
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 yellow device
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 white light emitting device
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 £350
Sublimed (>99.0% purity) M2175A1 500 mg £580
Sublimed (>99.0% purity) M2175A1 1 g £900

MSDS Documentation

B4PymPm MSDSB4PymPm 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.
  6. Efficient exciplex emission from intramolecular charge transfer material, T. Zhang et al., Org. Electron., 25, 6–11 (2015); DOI: 10.1016/j.orgel.2015.06.017.

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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