B3PymPm
B3PymPm, ETL and HBL material in OLED devices
Paired with TCTA to be used in TADF devices to fabricate highly-efficient fluorescent OLEDs
B3PymPm is an isomer to B2PymPm and B4PymPm, with a 2-methylpyrimidine core structure with four pyridine pendants. It is electron-deficient and can be used in OLED devices as an electron-transporting or hole-blocking layer material.
B3PymPm is known to form hydrogen bonding in and between molecules. The intermolecular and intramolecular hydrogen bonding are believed to promote film morphology - hence enhancing charge mobility.
Due to its electron-deficient nature, together with TCTA, B3PymPm is also used in thermally activated delayed fluroescent (TADF) devices as an exciplex-forming co-host to fabricate highly-efficient fluorescent organic light-emitting diodes.
General Information
| CAS number | 925425-96-3 |
|---|---|
| Full name | 4,6-Bis(3,5-di(pyridin-3-yl)phenyl)-2-methylpyrimidine, 4,6-Bis(3,5-di-3-pyridinylphenyl)-2-methylpyrimidine |
| Chemical formula | C37H26N6 |
| Molecular weight | 554.64 g/mol |
| Absorption* | λmax 248 nm in DCM |
| Fluorescence | n/a |
| HOMO/LUMO | HOMO = 6.97 eV, LUMO = 3.53 eV [1]; ET1 = 3.08 eV |
| Classification / Family | Pyrimidine derivatives, Highly efficient light-emitting diodes, Organic electronics, Electron-transport layer (ETL) materials, Hole-blocking layer (HBL) materials, Sublimed materials. |
* Measurable with an optical spectrometer, see our spectrometer application notes.
Product Details
| Purity | Sublimed >99.0% (HPLC), unsublimed >98.0% |
|---|---|
| Melting point | 326 °C |
| Appearance | White crystals/powder |
* Sublimation is a technique used to obtain ultra pure-grade chemicals, see sublimed materials for OLED devices.
Chemical Structure
Device Structure(s)
| Device structure | ITO/15 wt.% Rb2CO3:B3PymPm (20 nm)/B3PymPm (30 nm)/8 wt.% Ir(ppy)3:CBP (15 nm)/TAPC (30 nm)/8 wt.% ReO3:TAPC (20 nm)/Al [2] |
|---|---|
| Colour | Green 
|
| Max. Power Efficiency | 79.8 lm W−1 |
| Max. EQE | 19.8% |
| Device structure | ITO (150 nm)/TAPC (20 nm)/TCTA (10 nm)/TCTA:B3PYMPM:Ir(mphq)2(acac) (5 nm, 3 wt%)/TCTA:B3PYMPM:Ir(ppy)2(acac) (25 nm, 8 wt%)/B3PYMPM (45 nm)/LiF (0.7 nm)/Al (100 nm) [3] |
|---|---|
| Colour | Orange 
|
| Max. Power Efficiency | 70.1 lm W−1 |
| Max. EQE | 22.8% |
| Device structure | ITO (70 nm)/ TAPC (75 nm)/TCTA (10 nm)/TCTA:B3PYMPM:4 wt % Ir(dmppy-pro)2tmd* (30 nm)/B3PYMPM (45 nm)/LiF (0.7 nm)/Al (100 nm) [4] |
|---|---|
| Colour | Green
|
| Max. Current Efficiency | 126 cd/A |
| Max. EQE | 36.0% |
| Device structure | ITO (70 nm)/ TAPC (75 nm)/TCTA (10 nm)/TCTA:B3PYMPM:4 wt % Ir(dmppy-ph)2tmd* (30 nm)/B3PYMPM (55 nm)/LiF (0.7 nm)/Al (100 nm) [4] |
|---|---|
| Colour | Yellow 
|
| Max. Current Efficiency | 108 cd/A |
| Max. EQE | 38.1% |
| Device structure | ITO (70 nm)/TAPC ( 80 nm)/TCTA (10 nm)/TCTA:B3PYMPM:8 wt% Ir(ppy)2(acac) (30 nm)/B3PYMPM (40 nm)/Al (100 nm) [5] |
|---|---|
| Colour | Green
|
| Max. Current Efficiency | 127.3 lm W−1 |
| Max. EQE | 30.2% |
| Device structure | ITO (70 nm)/TAPC (75 nm)/TCTA (10 nm)/TCTA:B3PYMPM:8.4 mol% Ir(ppy)2tmd* (30 nm)/B3PYMPM (45 nm)/LiF (0.7 nm)/Al (100 nm) [6] |
|---|---|
| Colour | Green
|
| Max. Current Efficiency | 142.5 lm W−1 |
| Max. EQE | 32.3% |
*For chemical structure information, please refer to the cited references
Pricing
| Grade | Order Code | Quantity | Price |
|---|---|---|---|
| Sublimed (>99.0% purity) | M2174A1 | 250 mg | £320 |
| Unsublimed (>98.0% purity) | M2174B1 | 500 mg | £270 |
| Sublimed (>99.0% purity) | M2174A1 | 500 mg | £520 |
| Unsublimed (>98.0% purity) | M2174B1 | 1 g | £440 |
| Sublimed (>99.0% purity) | M2174A1 | 1 g | £800 |
| Unsublimed (>98.0% purity) | M2174B1 | 5 g | £1700 |
MSDS Documentation
B3PymPm MSDS sheetLiterature and Reviews
- Development of high performance OLEDs for general lighting, H. Sasabe et al., J. Mater. Chem. C, 1, 1699 (2013); DOI: 10.1039/c2tc00584k.
- A high performance inverted organic light emitting diode using an electron transporting material with low energy barrier for electron injection, J. Lee et al., Org. Electron., 12, 1763–1767 (2011); doi: 10.1016/j.orgel.2011.07.015.
- High efficiency and non-color-changing orange organic light emitting diodes with red and green emitting layers, S. Lee et al., Org. Electron., 14, 1856–1860 (2013); doi: 10.1016/j.orgel.2013.04.020.
- Design of Heteroleptic Ir Complexes with Horizontal Emitting Dipoles for Highly Efficient Organic Light-Emitting Diodes with an External Quantum Efficiency of 38%, K. Kim et al, Chem. Mater., 28, 7505−7510 (2016); DOI: 10.1021/acs.chemmater.6b03428.
- Organic Light-Emitting Diodes with 30% External Quantum Efficiency Based on a Horizontally Oriented Emitter, S. Kim et al., Adv. Funct. Mater., 23, 3896–3900 (2013); DOI: 10.1002/adfm.201300104.
- Highly Effi cient Organic Light-Emitting Diodes with Phosphorescent Emitters Having High Quantum Yield and Horizontal Orientation of Transition Dipole Moments, K. Kim et al., Adv. Mater., 26, 3844–3847 (2014); DOI: 10.1002/adma.201305733.
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.