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Product Code M2273A1
Price $300.00 ex. VAT

3P-T2T, ETL material for OLED devices

Highly efficient blue as well as green, yellow and red phosphorescent emitter

3P-T2T, 2,4,6-tris(2-(1H-pyrazol-1-yl)phenyl)-1,3,5-triazine, has a structure with an electron deficient triazine core equipped with phenylpyrazole peripherals. Like PO-T2T and 3N-T2T, 3P-T2T is one of the triazine derivatives and is normally used as an electron transport layer (ETL) in OLED devices. 3P-T2T shows a higher electron transport/injection ability than T2T due to the peripheral three electron-withdrawing pyrazolyl moieties.

As an acceptor, together with TCTA as hole transporting donor, 3P-T2T forms exciplex as a highly efficient yellow delayed fluorescent emitter. The exciplex TCTA:3PT2T has high and balanced hole and electron mobilities and large energy-levels offsets at the TCTA/3P-T2T interface.

3P-T2T can not only accommodate highly efficient blue, but can also act as suitable host for green, yellow and red phosphorescent emitters.

General Information

CAS number 352196-01-1
Chemical formula C30H21N9
Molecular weight 507.56 g/mol
Absorption λmax 267 nm (in film)
Fluorescence λem 415 nm (in film)
HOMO/LUMO HOMO = 6.43 eV, LUMO = 2.98 eV [1]; ET= 2.85 eV
Full chemical name 2,4,6-tris(2-(1H-pyrazol-1-yl)phenyl)-1,3,5-triazine
Synonyms 3P-T2T
Classification / Family Triazine derivatives, TADF exciplex co-host, Phosphorescent organic light-emitting devices (PHOLEDs),Phosphorescent host, Electron transporting layer (ETL), Sublimed materials

Product Details

Purity Sublimed >99.0% (HPLC)
Melting point Td = 352 °C, Tg = 64 °C (lit.)
Appearance Off-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

Chemical structure 3P-T2T, CAS 352196-01-1
Chemical structure of 2,4,6-tris(2-(1H-pyrazol-1-yl)phenyl)-1,3,5-triazine (3P-T2T), CAS 352196-01-1

Device Structure(s)

Device structure ITO/pedot:pss (30 nm)/NPB (20 nm)/TCTA (5 nm)/TCTA:3PT2T50 mol % (25 nm)/ 3P-T2T (50 nm)/Liq/Al [1]
Colour Yellow Yellow light emitting device
Max. Current Efficiency 23.6 cd/A
Max. EQE 7.8 %
Max. Power Efficiency 26.0 Im/W
Device structure ITO/MoO3 (3 nm)/NPB (20 nm)/TCTA (8 nm)/TCTA:3P-T2T (1:1): 1 wt% DCJTB (15 nm)/3P-T2T (45 nm)/LiF (1 nm)/Al [2]
Colour Red Red device light emitting device
Max. Current Efficiency 22.7 cd/A
Max. EQE 10.15 %
Max. Power Efficiency 21.5 Im/W
Device structure ITO/4 wt% ReO3:Tr-Ph (60 nm)/Tr-Ph (15 nm)/Tr-Ph:3P-T2T (1:1, 20 nm)/3P-T2T (10 nm)/CN-T2T (40 nm)/Liq (0.5 nm)/Al (100 nm) [3]
Colour Yellow Yellow light emitting device
Max. Current Efficiency 29.8 cd/A
Max. EQE 10.3%
Max. Power Efficiency 37.5 Im/W
Device structure ITO/HAT-CN (15 nm)/TAPC (30 nm)/mCBP (5 nm)/4CzIPN:o-CbzBiz (9 wt %; 25 nm)/3P-T2T (50 nm)/LiF (1 nm)/Al (100 nm) [4]
Colour Green Green light emitting device
Max. Current Efficiency 52.9 cd/A
Max. EQE 16.7%
Max. Power Efficiency 41.6 Im/W


Grade Order Code Quantity Price
Sublimed(>99.0% purity) M2273A1 100 mg £240
Sublimed(>99.0% purity) M2273A1 250 mg £480
Sublimed(>99.0% purity) M2273A1 500 mg £850
Sublimed(>99.0% purity) M2273A1 1 g £1300

MSDS Documentation

3P-T2T MSDS3P-T2T MSDS sheet

Literature and Reviews

  1. Highly Efficient Bilayer Interface Exciplex For Yellow Organic Light-Emitting Diode, W-Y. Hung et al., ACS Appl. Mater. Interfaces, 5, 6826−6831 (2013); DOI: 10.1021/am402032z.
  2. Highly efficient red OLEDs using DCJTB as the dopant and delayed fluorescent exciplex as the host, B. Zhao et al., Sci. Report, 5, 10697 (2015); DOI: 10.1038/srep10697.
  3. New exciplex systems composed of triazatruxene donors and N-heteroarene-cored acceptors, Y-C. Hu et al., Mater. Chem. Front., 4, 2029-2039 (2020); DOI: 10.1039/d0qm00188k.
  4. Carbazole/Benzimidazole-Based Bipolar Molecules as the Hosts for Phosphorescent and Thermally Activated Delayed Fluorescence Emitters for Efficient OLEDs, Z-J. Gao et al., ACS Omega, 5, 10553−10561 (2020); 10.1021/acsomega.0c00967.
  5. Peripheral modification of 1,3,5-triazine based electron-transporting host materials for sky blue, green, yellow, red, and white electrophosphorescent devices, J. Mater. Chem., 22, 15620-15627 (2012); DOI: 10.1039/C2JM31904G.
  6. The First Tandem, All-exciplex-based WOLED, W-Y. Hung et al., Sci. Report, 4, 5161 (2014); DOI: 10.1038/srep05161.
  7. Exciplex-Forming Cohost for High Efficiency and High Stability Phosphorescent Organic Light-Emitting Diodes, C-J. Shih et al., ACS Appl Mater Interfaces, 10(2), 2151-2157 (2018); DOI: 10.1021/acsami.7b15034.
  8. High-efficiency organic light-emitting diodes with exciplex hosts, Q. Wang et al., J. Mater. Chem. C, 7, 11329 (2019); DOI: 10.1039/c9tc03092a.

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.

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