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.
|Full name||4,6-Bis(3,5-di(pyridin-4-yl)phenyl)-2-methylpyrimidine, 4,6-Bis(3,5-di-4-pyridinylphenyl)-2-methylpyrimidine|
|Molecular weight||554.64 g/mol|
|Absorption||λmax 250 nm in DCM|
|Fluorescence||λmax 410 nm in Film|
|Classification / Family||Pyrimidine derivatives, Highly efficient light-emitting diodes, Organic electronics, Electron-transport layer (ETL) materials, Hole-blocking layer (HBL) materials, Sublimed materials.|
|Purity||Sublimed >99.0% (HPLC)|
|Melting point||374 °C (lit.)|
*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.
|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) |
|Max. Power Efficiency||79.8 lm W−1|
|Max. Current Efficiency||41.3 cd/A|
|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) |
|Max. Power Efficiency||105.0 lm W−1|
|Max. Current Efficiency||83.6 cd/A|
|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) |
|Max. Power Efficiency||152.5 lm W−1|
|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) 
|Max. Power Efficiency||95.5 lm W−1|
|Max. Current Efficiency||82.0 cd/A|
*For chemical structure information, please refer to the cited references
|Sublimed (>99.0% purity)||M2175A1||250 mg||£320|
|Sublimed (>99.0% purity)||M2175A1||500 mg||£520|
|Sublimed (>99.0% purity)||M2175A1||1 g||£800|
Literature and Reviews
- 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.
- 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.
- 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.
- 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.
- Development of high performance OLEDs for general lighting, H. Sasabe et al., J. Mater. Chem. C, 1, 1699 (2013); DOI: 10.1039/c2tc00584k.
To the best of our knowledge the information provided here is accurate. However, Ossila assume no liability for the accuracy of this page. The values provided are typical at the time of manufacture and may vary over time and from batch to batch. All products are for laboratory and research and development use only, and may not be used for any other purpose including health care, pharmaceuticals, cosmetics, food or commercial applications.