DCzTRZ

CAS Number 1106730-48-6

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

DCzTRz, for Blue TADF Devices

TADF dopant and exciplex, 9,9'-(5-(4,6-Diphenyl-1,3,5-triazin-2-yl)-1,3-phenylene)bis(9H-carbazole), CAS No. 1106730-48-6, Sublimed ≥99.0%

DCzTRZ, has a structure of two electron donating carbazole moieties attached to one of the phenyl rings of an electron deficient 1,3,5-triphenyltriazine unit.

Like TCzTRZ, DCzTRZ is used as a bipolar blue dopant material in highly efficient TADF-OLED devices. The only difference between DCzTRZ and TCzTRZ is that DCzTRZ is relatively blue shifted in absorption and emission, while TCzTRZ has one more carbazole unit.

As an electron acceptor, DCzTRZ can form exciplex with electron donor DMAC-DPS for green TADF-OLED devices with high photoluminescence quantum yield and high quantum efficiency.

General Information

CAS number	1106730-48-6
Full name	9,9'-(5-(4,6-Diphenyl-1,3,5-triazin-2-yl)-1,3-phenylene)bis(9H-carbazole)
Chemical formula	C₄₅H₂₉N₅
Molecular weight	639.75 g/mol
Absorption	λ_max 337 nm (in toluene)
Phosphorescene	λ_max 449 nm (in toluene)
HOMO/LUMO	HOMO = 5.88 eV, LUMO = 2.86 eV [1]
Synonyms	9-(3-(9H-Carbazol-9-yl)-5-(4,6-diphenyl-1,3,5-triazin-2-yl)phenyl)-9H-carbazole
Classification / Family	Triazine derivatives, Light-emitting diodes, Organic electronics, TADF blue emitter, Exciplex green emitter, Sublimed materials.

Product Details

Purity	Sublimed >99.0% (HPLC)
Melting point	T_g = 160 ℃, T_d(Temperature at 5% weight loss) = 397 ℃.
Appearance	Pale yellow 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/TAPC/mCP/25 wt% DCzTRZ:DPEPO/TSPO1/TPBI/LiF/Al [1]
Colour	Blue
Max. Current Efficiency	26.8 cd/A
Max. Power Efficiency	22.4 lm W^-1
Max. EQE	17.8%

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

MSDS Documentation

DCzTRZ MSDS Sheet

Literature and Reviews

Stable Blue Thermally Activated Delayed Fluorescent Organic Light-Emitting Diodes with Three Times Longer Lifetime than Phosphorescent Organic Light-Emitting Diodes, M. Kim et al., Adv. Mater., 27 (15), 2515-2520 (2015); DOI: 10.1002/adma.201500267.
Efficient and Stable Deep Blue Thermally Activated Delayed Fluorescence Molecules Based on a Bipyridine Acceptor Core, C. Cheng et al., J. Mater. Chem. C, 9, 3088-3095 (2021); DOI: 10.1039/D0TC05395C.
Design Strategy for 25% External Quantum Efficiency in Green and Blue Thermally Activated Delayed Fluorescent Devices, D. Lee et al., Adv. Mater., 27 (39), 5861-5867 (2015); DOI: 10.1002/adma.201502053.

Degradation Mechanisms in Blue Organic Light-Emitting Diodes, D. Wang et al., CCS Chem., 2 (4), 1278–1296 (2020); DOI: 10.31635/ccschem.020.202000271.
Recent advancements of high efficient donor–acceptor type blue small molecule applied for OLEDs, Y. Li et al., Mater. Today, 20 (5), 258-266 (2017); DOI: 10.1016/j.mattod.2016.12.003.