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Product Code M2419A1-LT-100mg
Price £210 ex. VAT

Electron Transport Layer Material with Triazine Core

High purity sublimed electron deficient material for highly efficient TADF-OLEDs

TmPPPyTz (CAS number 939430-31-6), namely 2,4,6-tris(3'-(pyridin-3-yl)biphenyl-3-yl)-1,3,5-triazine, has a wheel-shaped structure with 1,3,5-triazine core and three side arms of 3-pridylbiphenyl, and pyridines on the peripheral. It is highly electron deficient thus used as electron transport layer (ETL), hole blocking layer (HBL) material in highly efficient light-emitting diodes.

Hole-blocking ETL material in OLEDs

Hole-blocking ETL material

Hole-blocking ETL material in OLEDs

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High purity 939430-31-6 sublimed material

High purity sublimed material


TmPPPyTz wheel shaped molecule

Unique molecular confirmation

wheel shaped molecule

Device with platinum(II) complexes bearing tetradentate ligand with a bridging tertiary amine (tetra-Pt-N) as the active layer material with double-host TCTA:B3PYPM, and B3PYPM as the interlayer between the emissive layer and TmPPPyTz as the electron-transport layer, achieved a maximum power efficiency of over 100 lm/W, a low turn-on voltage of less than 2.5 V and low efficiency roll-off.

TmPPPyTz has a similar structure to 3N-T2T which tends to form exciplex with electron donor as co-host or emitting layer material.

General Information

CAS number 939430-31-6
Chemical formula C54H36N6
Molecular weight 768.9 g/mol
Absorption* λmax 251 nm (in DCM)
Fluorescence λem (n.a.)
HOMO/LUMO HOMO = 6.63eV, LUMO = 3.09 eV
Synonyms 2,4,6-Tris(3'-(pyridin-3-yl)biphenyl-3-yl)-1,3,5-triazine
Classification / Family Triazine derivatives, Electron transport layer (ETL), Hole blocking layer (HBL), Sublimed materials.

Product Details

Purity Sublimed* >99% (HPLC)
Melting point TGA: Td > 400° C. (5% weight loss)
Appearance Off white crystals/powder

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

Chemical Structure

tmpppytz - 939430-31-6 - 2,4,6-tris(3'-(pyridin-3-yl)biphenyl-3-yl)-1,3,5-triazine chemical structure
2,4,6-Tris(3'-(pyridin-3-yl)biphenyl-3-yl)-1,3,5-triazine (TmPPPyTz) chemical structure, 939430-31-6

Device Structure(s)

Device structure ITO/MO3/TCTA:B3PYPM: tetra-Pt-N* (18 nm)/B3PYMPM (10 nm)/TMPPPYTZ (40 nm)/LIF/Al [1]
Colour green light emitting device Green
Max Current Efficiency 87.2 cd/A 
Max EQE 23.2%
Max. Power Efficiency 102.8 lm W-1


Device structure ITO/TcTa:MoOx (40 nm, 15 wt.%)/TcTa (10 nm)/TcTa:10 wt.% FIrpic (5 nm)/TmPPPyTz:10 wt.% FIrpic (5 nm)/TmPPPyTz (40 nm)/Cs2CO3 (1 nm)/Al [2]
Colour blue light emitting device Blue
Max Current Efficiency 26.9 cd/A
Max EQE 13.3%
Max. Power Efficiency 32.5 lm W-1


Device structure ITO/TcTa:MoOx (40 nm, 15 wt.%)/TcTa (10 nm)/TcTa:6 wt.% Ir(ppy)3 (5 nm)/TmPPPyTz:6 wt.% Ir(ppy)3 (5 nm)/TmPPPyTz (40 nm)/Cs2CO3 (1 nm)/Al [2]
Colour green light emitting device Green
Max Current Efficiency 48.7 cd/A
Max EQE 14.3%
Max. Power Efficiency 58.8 lm W-1


Device structure ITO/TcTa:MoOx (40 nm, 15 wt.%)/TcTa (10 nm)/TcTa:8 wt.% Ir(MDQ)2(acac) (5 nm)/TmPPPyTz:8 wt.% Ir(MDQ)2(acac) (5 nm)/TmPPPyTz (40 nm)/Cs2CO3 (1 nm)/Al [2]
Colour red light emitting device Red
Max Current Efficiency 20.1 cd/A
Max EQE 13.7%
Max. Power Efficiency 24.9 lm W-1

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


Grade Order Code Quantity Price
Sublimed (>99% purity) M2419A1 100 mg £210
Sublimed (>99% purity) M2419A1 250 mg £420
Sublimed (>99% purity) M2419A1 500 mg £730
Sublimed (>99% purity) M2419A1 1 g £1100

MSDS Documentation

tmpppytz - 939430-31-6 - 2,4,6-tris(3'-(pyridin-3-yl)biphenyl-3-yl)-1,3,5-triazineTmPPPyTz MSDS Sheet

Literature and Reviews

  1. High-performance organic light-emitting diodes with low-efficiency roll-off using bulky tetradentate [Pt(O^N^C^N)] emitters, M. Mao et al., J. Mater. Chem. C, 7, 7230-7236 (2019); DOI: 10.1039/C9TC00682F.
  2. Low driving voltage blue, green, yellow, red and white organic light-emitting diodes with a simply double light-emitting structure, Z. Zhang et al., Opt. Express, 22 (2), 1815-1823 (2014); DOI: 10.1364/OE.22.001815.
  3. Carbazole-based Multiple Resonance Dendrimers with Narrowband Blue Emission for Solution-Processed OLEDs, J. Liu et al., Chinese J. Polym. Sci., 41, 802–810 (2023); DOI: 10.1007/s10118-023-2977-4.

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