Pricing
Grade Order Code Quantity Price
Sublimed (>99.0% purity) M2174A1 250 mg
£266.00
Sublimed (>99.0% purity) M2174A1 500 mg £426.00
Sublimed (>99.0% purity) M2174A1 1 g
£682.00
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 C37 H 26 N 6
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.
Product Details
Purity Sublimed >99.0% (HPLC)
Melting point 326 °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 Sublimed Materials for OLED Devices page.
Chemical structure of B3PymPm; CAS No. 925425-96-3.
Applications
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 bondings 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 cohost to fabricate highly-efficient fluorescent organic light-emitting diodes.
Device structure ITO/15 wt.% Rb2 CO3 :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)2 tmd* (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)2 tmd* (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) 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)2 tmd* (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
Literature 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.
