B3PyPB
CAS Number 1030380-38-1
Electron / Hole Transport Layer Materials, High Purity Sublimed Materials, Materials, Semiconducting Molecules, TADF Materials
B3PyPB, ETL and HBL material in OLED devices
Used to improve the performance of PhOLEDs
Bearing four pyridyl groups, B3PyPB is electron deficient and has high electron mobility. It is widely used as an electron-transport material (ETL) in OLED devices. With a deep HOMO energy level (6.60 eV), B3PyPB is also used as a hole-blocking layer material (EBL).
Having a high triplet energy (ET = 2.77 eV), B3PyPB is used in phosphorescent OLEDs to suppress triplet quenching of the light-emitting molecules, leading to higher external quantum efficiency - hence improving the device performance.
General Information
CAS number | 1030380-38-1 |
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Full name | 1,3-Bis(3,5-dipyrid-3-ylphenyl)benzene |
Chemical formula | C38H26N4 |
Molecular weight | 538.64 g/mol |
Absorption | λmax 259 nm in film |
Fluorescence | λem 359 nm in film |
HOMO/LUMO | HOMO 6.60 eV, LUMO 2.60 eV [1] |
Synonyms | 1,3-Bis[3,5-di(pyridin-3-yl)phenyl]benzene, BmPyPB, BmPyPhB |
Classification / Family | Organic electronics, Hole blocking layer materials (HBL), Electron transporting layer materials (ETL), TADF-OLEDs, Sublimed materials. |
Product Details
Purity | Sublimed: >99.0% (HPLC) |
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Melting point | TGA: >350 °C (0.5% weight loss) |
Colour | White powder/crystals |
*Sublimation is a technique used to obtain ultra pure-grade chemicals. For more details about sublimation, please refer to the Sublimed Materials.
Chemical Structure
Device Structure(s)
Device structure | ITO (130 nm)/TAPC (60 nm)/TCTA:7 wt% FIrpic (5 nm)/TCTA:FIrpic 20 wt% (5 nm)/B3PyPB (20 nm)/ B3PyPB:25 wt% Liq (35 nm)/Liq (1 nm)/Al (100 nm) [2] |
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Colour | Blue |
Current Efficiency@100 cd/m2 | 51.6 cd/A |
EQE@100 cd/m2 | 21.8% |
Power Efficiency@100 cd/m2 | 56.5 lm W-1 |
Device structure | ITO (130 nm)/TAPC (60 nm)/TCTA:7 wt% FIrpic (5 nm)/TCTA:FIrpic 20 wt% (5 nm)/B3PyPB (20 nm)/B3PyPB:25wt% Liq (35 nm)/Liq (1 nm)/Al (1 nm)/MoO3 (5 nm)/TAPC (60 nm)/TCTA:7 wt% FIrpic (5 nm)/TCTA: FIrpic 20 wt% (10 nm)/B3PyPB (20 nm)/B3PyPB: 25wt% Liq (35 nm /Liq (1 nm) [2] |
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Colour | Blue |
Current Efficiency@100 cd/m2 | 90.0 cd/A |
EQE@100 cd/m2 | 41.1% |
Power Efficiency@100 cd/m2 | 40.8 lm W-1 |
Device structure | ITO/triphenylamine-containing polymer: PPBI (20 nm)/TAPC (20 nm)/ 10 wt% CzAc-26DPPM:mCP (10 nm)/10 wt% CzAc-26DPPM:DPEPO (10 nm)/B3PyPB (50 nm)/LiF (0.5 nm)/Al (100 nm) [3] |
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Colour | Blue |
Current Efficiency@100 cd/m2 | 53.9 cd/A |
EQE@100 cd/m2 | 22.8% |
Power Efficiency@100 cd/m2 | 59.2 lm W-1 |
Device structure | ITO/triphenylamine-containing polymer: PPBI* (20 nm)/TAPC (20 nm)/ 10 wt% CzAc-26DPPM:mCP (10 nm)/10 wt% CzAc-26DPPM:DPEPO (10 nm)/B3PyPB (50 nm)/LiF (0.5 nm)/Al (100 nm) [4] |
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Colour | Blue |
Max. Current Efficiency | 28.6 cd/A |
Max. EQE | 18.6% |
Max. Power Efficiency | 35.9 lm W-1 |
Device structure | ITO (130 nm)/TAPC (40 nm)/TCTA (5 nm)/ PQ2Ir(dpm) 2 wt % doped CBP (1 nm)/Ir(ppy)3 6 wt % doped CBP (1 nm)/Ir(dbfmi)* 10 wt % doped PO9 (10 nm)/B3PyPB (50 nm)/LiF (0.5 nm)/Al (100 nm) [4] |
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Colour | White |
Max. Current Efficiency | 53.7 cd/A |
Max. EQE | 23.3% |
Max. Power Efficiency | 55.2 lm W-1 |
Device structure | ITO (130 nm)/TAPC (35 nm)/5 wt% 4CzIPN-doped CBP (15 nm)/B3PyPB (65 nm)/LiF (0.8 nm)/Al (100 nm) [5] |
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Colour | Green |
Max Current Efficiency | 71.2 cd/A |
Max EQE | 21.8% |
Max. Power Efficiency | 60.9 lm W-1 |
Device structure | ITO (90 nm)/HATCN (5 nm)/TAPC (65 nm)/10 wt% fac -Ir(mpim)3 -doped TCTA (5 nm)/10 wt% fac -Ir(mpim)3 -doped 26DCzPPy (5 nm)/B3PyPB (65 nm)/Liq (2 nm)/Al (80 nm) [6] |
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Colour | Blue |
Current Efficiency@100 cd/m2 | 73.2 cd/A |
EQE@100 cd/m2 | 29.6% |
Power Efficiency@100 cd/m2 | 76.5 lm W-1 |
*For chemical structure information, please refer to the cited references.
Pricing
Grade | Order Code | Quantity | Price |
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Sublimed (>99.0% purity) | M2127A1 | 100 mg | £200 |
Sublimed (>99.0% purity) | M2127A1 | 250 mg | £400 |
Sublimed (>99.0% purity) | M2127A1 | 500 mg | £680 |
Sublimed (>99.0% purity) | M2127A1 | 1 g | £1150 |
MSDS Documentation
Literature and Reviews
- High efficiency solution processed OLEDs using a thermally activated delayed fluorescence emitter, R. Komatsu et al., Synth. Met., 202, 165–168 (2015); doi: 10.1016/j.synthmet.2015.02.009.
- Ultra high-efficiency multi-photon emission blue phosphorescent OLEDs with external quantum efficiency exceeding 40%, H. Sasabe et al., Org. Electron., 13, 2615–2619 (2012); doi: 0.1016/j.orgel.2012.07.019.
- Significant Enhancement of Blue OLED Performances through Molecular Engineering of Pyrimidine-Based Emitter, K. Nakao et al., Adv. Optical Mater., 5, 1600843 (2017); DOI: 10.1002/adom.201600843.