FREE shipping to on qualifying orders when you spend or more. All prices ex. VAT.


Product Code M2093A1
Price $313.00 ex. VAT

TmPyPB, ETL/HBL material for organic electronic devices

Blended with TCTA to fabricate high-efficiency blue PHOLEDs

With a low-lying HOMO, high triplet energy level, and electron-deficient pyridine groups, TmPyPB is widely used as an electron-transport layer and hole-blocking layer material in organic electronic devices (such as OLEDs, OPV and perovskite solar cells).

Blending with a hole-transporting material such as TCTA, TmPyPB has been used as a co-host material to fabricate high-efficiency blue PhOLEDs.

TmPyPB, 1,3,5-Tris(3-pyridyl-3-phenyl)benzene from Ossila was used in the high-impact paper (IF 30.85)

TmPyPB, 1,3,5-Tris(3-pyridyl-3-phenyl)benzene from Ossila was used in the high-impact paper (IF 30.85), Rivers of Light—Ternary Exciplex Blends for High Efficiency Solution-Processed Red Phosphorescent Organic Light Emitting Diodes, J. Saghaei, et al., Adv. Funct. Mater., 2108128 (2021); 10.1002/adfm.202108128.

General Information

CAS number 921205-03-0
Chemical formula C39H27N3
Molecular weight 537.65 g/mol
Absorption λmax 254 nm in DCM
Fluorescence λem  353 nm in DCM
HOMO/LUMO HOMO 6.75 eV, LUMO 2.75 eV [1]
Synonyms Tm3PyPB, 1,3,5-Tri(m-pyridin-3-ylphenyl)benzene, 1,3,5-Tris(3-pyridyl-3-phenyl)benzene,
Classification / Family TADF host materials, Electron transport layer (ETL) materials, Hole-blocking layer (HBL) materials, Phosphorescent Host Materials, Solution-processed OLED maetrials, PHOLEDs, OPV, Perovskite solar cells, Sublimed materials

Product Details

Purity >99.0% (sublimed)
Melting Point Melting point/range: 195 - 200 °C; TGA: T≥ 310 oC (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 for OLED devices page.

Chemical Structure

TmPyPB chemical structure
Chemical structure of 1,3,5-Tris(3-pyridyl-3-phenyl)benzene (TmPyPB)

Device Structure(s)

Device structure ITO/HAT-CN (10 nm)/TAPC (45 nm)/TCTA (10 nm)/Ir(MDQ)2(acac) (0.3 nm)/TmPyPb (40nm)/Liq (2 nm)/Al (120 nm) [1]
Colour Red red light emitting device
Max. Current Efficiency 29.9 cd/A
Max. EQE  16.2%
Device structure ITO/HAT-CN (10 nm)/TAPC (45 nm)/TCTA (10 nm)/Ir(ppy)2(acac) (0.3 nm)/TmPyPb (40nm)/Liq (2 nm)/Al (120 nm) [1]
Colour Green green light emitting device
Max. Current Efficiency 79.5 cd/A
Max. EQE 21.1%
Device structure ITO/HAT-CN (10 nm)/TAPC (45 nm)/TCTA (10 nm)/FIrpic (0.3 nm)/TmPyPb (40nm)/Liq (2 nm)/Al (120 nm) [1]
Colour Blue blue light emitting device
Max. Current Efficiency 39.0 cd/A
Max. EQE 17.6%
Device structure ITO/PEDOT:PSS(40 nm)/m-MTDATA:Ir(Flpy-CF3)3 (40 nm)/TmPyPB(55 nm)/LiF(0.5 nm)/Al(100 nm) [2]
Colour    Yellow  yellow device
Max. Current Efficiency 74.3 cd/A
Max. Power Efficiency 97.2 lm W1
Max. EQE 25.2%
Device structure ITO (70 nm)/HAT-CN (10 nm)/TAPC (50nm)//26DCzPPy:Ir(ppy)3 (7%, 10 nm)/TmPYMB (25 nm)/TmPYMB:Li (5%, 30 nm)/LiF(1 nm)/Al (100 nm) [3]
Colour Green green light emitting device
Max. Current Efficiency 66.2 cd/A
Max. Power Efficiency 77.1 lm W1
Max. EQE 19.7%
Device structure ITO/TPDPES:TBPAH (20 nm)/3DTAPBP (30 nm)/4CzPBP:11 wt% FIrpic (10 nm)/TmPyPB (40 nm)/LiF (0.5 nm)/Al (100 nm) [4]
Colour Blue blue light emitting device
Max. Power Efficiency 42.0 lm W1  
EQE@100 cd/m 22%
Device structure (ITO)/MoO3 (3 nm)/TCTA (50 nm)/TCTA:TmPyPb:FIrpic (20 nm)/TmPyPb (30 nm)/LiF (1 nm)/Al (120 nm) [5]
Colour Blue blue light emitting device
Max. Power Efficiency 55.4 lm W1  
Max. EQE 20.4%
Device structure ITO/MoO3(10 nm)/NPB (60 nm)/POBPmDPA*:FIr6(20 nm)/TmPyPB (35 nm)/LiF/Al  [6]
Colour Blue blue light emitting device
Max. Current Efficiency 37.0 cd/A
Max. Power Efficiency 140 lm W1  
Max. EQE 17.9%

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


Grade Order Code Quantity Price
Sublimed (>99% purity) M2093A1 500 mg £250
Sublimed (>99% purity) M2093A1 1 g £400

MSDS Documentation


Literature and Reviews

  1. Highly Efficient White Organic Light-Emitting Diodes with Ultrathin Emissive Layers and a Spacer-Free Structure, S. Wu et al., Sci. Reports 6, 25821 (2016); doi:10.1038/srep25821.
  2. Solution-Processed Phosphorescent Organic LightEmitting Diodes with Ultralow Driving Voltage and Very High Power Efficiency, S. Wang et al., Sci. Report, 5:12487 (2015); DOI: 10.1038/srep12487.
  3. Highly efficient green, blue, and white phosphorescent inverted organic light-emitting diodes by improving charge injection and balance, H. Lee et al., J. Mater. Chem. C, 5, 9911--9919 (2017); DOI: 10.1039/c7tc02795h.
  4. Pyridine-Containing Triphenylbenzene Derivatives with High Electron Mobility for Highly Efficient Phosphorescent OLEDs, S. Su et al., Adv. Mater., 20, 2125–2130 (2008); DOI: 10.1002/adma.200701730.
  5. High efficiency blue phosphorescent organic light-emitting diode based on blend of hole- and electron-transporting materials as a co-host, Y. Chen et al., Appl. Phys. Lett. 100, 213301 (2012); doi: 10.1063/1.4720512.
  6. Using an Organic Molecule with Low Triplet Energy as a Host in a Highly Efficient Blue Electrophosphorescent Device, C. Fan et al., Angew. Chem. Int. Ed., 53, 2147 –2151 (2014) DOI: 10.1002/anie.201308046.

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.

Return to the top