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Product Code M2435A1-100mg
Price $250 ex. VAT

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A Blue-Emitting Organic Semiconductor

For the fabrication of highly efficient TADF-OLEDs


SpiroAC-TRZ 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/LUMO

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

SpiroAC-TRZSpiroAC-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

  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.
  4. 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.
  5. 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.
  6. 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.

To the best of our knowledge the information provided here is accurate. The values provided are typical at the time of manufacture and may vary over time and from batch to batch. Products may have minor cosmetic differences (e.g. to the branding) compared to the photos on our website. All products are for laboratory and research and development use only.

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