SpiroAC-TRZ

CAS Number 1980037-96-4

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

A Blue-Emitting Organic Semiconductor

For the fabrication of highly efficient TADF-OLEDs

SpiroAC-TRZ (CAS number 1980037-96-4) is designed with a spiroacridine donor covalently linked to a triazine acceptor unit. It functions as a blue-emitting organic semiconductor, exhibiting thermally activated delayed fluorescence (TADF).

SpiroAC-TRZ demonstrates a strong horizontal dipole ratio up to 83% and photoluminescence quantum yield of near 100%. Due to the small singlet-triplet energy gap (ΔE_ST) of 0.072 eV, the reverse intersystem crossing and related processes readily occur in SpiroAC-TRZ. An OLED device featuring SpiroAC-TRZ shows an extraordinarily high external quantum efficiency of 36.7%, with a current efficiency of 72 cd/A and a power efficiency of 84 lm/W.

As a third-generation OLED emitter, spiroAC-TRZ is also employed in the fabrication of simplified single-layer blue-emitting OLEDs. The emitting layer of SpiroAC-TRZ is situated between ohmic contacts of PEDOT:PSS:PFI anode and Ba/Al cathode. This single-layered OLED exhibits EQE of 27.7% with minimal roll-off, maintaining an EQE of 23% at luminance of 1000 cd/m².

TADF emitter

Achieves high external quantum efficiency of 36.7%

Worldwide shipping

Quick and reliable shipping

Demonstrate near-unitary PLQY

Near 100% photoluminescence quantum yield

Sublimed grade purity

>99% Grade purity

General Information

CAS Number	1980037-96-4
Full Name	10-(4-(4,6-Diphenyl-1,3,5-triazin-2-yl)phenyl)-10H-spiro[acridine-9,9'-fluorene]
Chemical Formula	C₄₆H₃₀N₄
Molecular Weight	638.76 g/mol
Purity	Sublimed >99% (HPLC)
Fluorescence	λ_max = 479 nm (toluene) [1]
HOMO/LUMO	HOMO = −5.7 eV LUMO = −3.1 eV [1]
Decomposition Temperature	T_d = 353 °C [1]
Glass Transition Temperature	T_g = 155 °C [1]
Processing Solvents	Toluene
Appearance	Pale yellow powder
Synonyms	SpiroAc-TRZ
Classification or Family	Emitting layers, Blue emitter, Dopant materials, Acridines, Triazines, TADF blue emitters, Sublimed materials, TADF OLEDS

Chemical Structure

Device Structure(s)

Device Structure	ITO/MoO₃/TAPC/mCP/12 wt% SpiroAC-TRZ:mCPCN/3TPYMB/LiF/Al [1]
Colour	Blue
External Quantum Efficiency	36.7%
Current Efficiency	94 cd/A
Power Efficiency	98.4 lm/W
Turn On Voltage	2.0 V

Device Structure	PEDOT:PSS:PFI (20 nm)/SpiroAC-TRZ:mCPCN(1:1, 80 nm)/Ba (2.5 nm)/Al (100 nm) [4]
Colour	Blue
External Quantum Efficiency	27.7%
Current Efficiency	94 cd/A
Power Efficiency	84 lm/W
Turn On Voltage	2.53 V

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

MSDS Documentation

SpiroAC-TRZ MSDS Sheet

Pricing

Product Code	Quantity	Price
M2435A1	100 mg	£200
M2435A1	250 mg	£400
M2435A1	500 mg	£650
M2435A1	1 g	£1040

Literature and Reviews

Sky-blue organic light emitting diode with 37% external quantum efficiency using thermally activated delayed fluorescence from spiroacridine-triazine hybridT. -A. Lin et al., Adv. Mater., 28, 6976–6983 (2016); DOI: 10.1002/adma.201601675.
Purely organic thermally activated delayed fluorescence materials for organic light-emitting diodes, M. Wong et al., Adv. Mater., 29, 1605444 (2017); DOI: 10.1002/adma.201605444.
A brief history of OLEDs — emitter development and industry milestones, G. Hong et al., Adv. Mater., 33, 2005630 (2021); DOI: 10.1002/adma.202005630.

Single-layer blue organic light-emitting diodes with near-unity internal quantum efficiency, O. Sachnik et al., Adv. Mater., 35, 2300574 (2023); DOI: 10.1002/adma.202300574.
1,3,5-Triazine-functionalized thermally activated delayed fluorescence emitters for organic light-emitting diodes, D. Sun et al., Adv. Photonics Res., 3, 2200203 (2022); DOI: 10.1002/adpr.202200203.
Exciton energy transfer in organic light emitting diodes with thermally activated delayed fluorescence dopants, I. Lyskov et al., J. Mater. Chem. C, 6, 6860–6868 (2018); DOI: 10.1039/C8TC01992D.