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Product Code M2435A1-100mg
Price £200 ex. VAT

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 (ΔEST) 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.

A TADF emitter

TADF emitter

Achieves high external quantum efficiency of 36.7%

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Demonstrate near-unitary PLQY

Demonstrate near-unitary PLQY

Near 100% photoluminescence quantum yield

Sublimed grade purity 1980037-96-4

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 λmax = 479 nm (toluene) [1]

HOMO = −5.7 eV

LUMO = −3.1 eV [1]

Decomposition Temperature Td = 353 °C [1]
Glass Transition Temperature Tg = 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

SpiroAC-TRZ chemical structure, CAS 1980037-96-4
SpiroAC-TRZ chemical structure, CAS 1980037-96-4

Device Structure(s)

Device Structure ITO/MoO3/TAPC/mCP/12 wt% SpiroAC-TRZ:mCPCN/3TPYMB/LiF/Al [1]
Colour Blue light emitting device 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 light emitting device 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



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

Literature and Reviews

  1. 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.
  2. 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.
  3. A brief history of OLEDs — emitter development and industry milestones, G. Hong et al., Adv. Mater., 33, 2005630 (2021); DOI: 10.1002/adma.202005630.
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