3P-T2T

CAS Number 352196-01-1

High Purity Sublimed Materials, Host Materials, Materials, OLED Materials, Semiconducting Molecules, TADF Host Materials, TADF Materials

MSDS

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	λ_max 267 nm (in film)
Fluorescence	λ_em 415 nm (in film)
HOMO/LUMO	HOMO = 6.43 eV, LUMO = 2.98 eV [1]; E_T= 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	T_d = 352 °C, T_g = 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.

Chemical Structure

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
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
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
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
Max. Current Efficiency	52.9 cd/A
Max. EQE	16.7%
Max. Power Efficiency	41.6 Im/W

Pricing

Grade	Order Code	Quantity	Price
Sublimed(>99.0% purity)	M2273A1	100 mg	£260
Sublimed(>99.0% purity)	M2273A1	250 mg	£520
Sublimed(>99.0% purity)	M2273A1	500 mg	£950
Sublimed(>99.0% purity)	M2273A1	1 g	£1450

MSDS Documentation

3P-T2T MSDS sheet

Literature and Reviews

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.
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.
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.

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.
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.
The First Tandem, All-exciplex-based WOLED, W-Y. Hung et al., Sci. Report, 4, 5161 (2014); DOI: 10.1038/srep05161.
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.
High-efficiency organic light-emitting diodes with exciplex hosts, Q. Wang et al., J. Mater. Chem. C, 7, 11329 (2019); DOI: 10.1039/c9tc03092a.