B3PymPm

B3PymPm, ETL and HBL material in OLED devices

Paired with TCTA to be used in TADF devices to fabricate highly-efficient fluorescent OLEDs, CAS No. 925425-96-3, 4,6-Bis(3,5-di(pyridin-3-yl)phenyl)-2-methylpyrimidine, 4,6-Bis(3,5-di-3-pyridinylphenyl)-2-methylpyrimidine

Overview | Specifications | | MSDS | Literature and Reviews

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 fluorescent (TADF) devices as an exciplex-forming co-host to fabricate highly-efficient fluorescent organic light-emitting diodes.

General Information

* Measurable with an optical spectrometer

Product Details

* Sublimation is a technique used to obtain ultra pure-grade chemicals, see sublimed materials.

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]
Color	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]
Color	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]
Color	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]
Color	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]
Color	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]
Color	Green
Max. Current Efficiency	142.5 lm W−1
Max. EQE	32.3%

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

MSDS Documentation

B3PymPm MSDS sheet

Literature and Reviews

1. Development of high performance OLEDs for general lighting, H. Sasabe et al., J. Mater. Chem. C, 1, 1699 (2013); DOI: 10.1039/c2tc00584k.
2. 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.
3. 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.

View Literature and Reviews

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