Order Code: M2093A1
MSDS sheet


(excluding Taxes)


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, 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: Td ≥ 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, 1,3,5-Tris(3-pyridyl-3-phenyl)benzene, 921205-03-0
Chemical structure of 1,3,5-Tris(3-pyridyl-3-phenyl)benzene (TmPyPB), CAS No. 921205-03-0.



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.

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
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
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
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
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
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
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
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
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


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.

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