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Product Code M2380B1-250mg
Price $300 ex. VAT

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A TADF yellow emitter

Used either as solo emitter in highly efficient TADF-OLEDs or an assistant dopant for TAF-OLEDs.


4CzIPN-Me, namely 2,4,5,6-Tetra(3,6-dimethylcarbazol-9-yl)-1,3-dicyanobenzene, is the methyl substituted 4CzIPN at 3,6-positions of the four carbazolyl units. Methyl groups at 3,6-positions will enhance the stability but also the solubility of the Carbazolyl benzonitriles. 4CzIPN-Me is the isomeric structure to 4CzPN-Me and 4CzTPN-Me.

By introducing an assistant dopant having a rather large kRISC~106, 4CzIPN-Me, both high electroluminescence efficiency and enhanced operational stability could be achieved in TADF assisted fluorescence (TAF-OLEDs). The state-of-the-art TAF-OLED technology uses a TADF molecule as an assistant dopant and a fluorescent molecule as an end emitter in a host matrix. The suppression of exciton annihilation was demonstrated via efficient and rapid triplet- singlet up conversion.

Electrogenerated chemiluminescence (ECL) study shows that the ECL intensity of 4CzIPN-Me decreases during voltage cycles due to the fact that polymerization happens on the carbazolyl moieties.

General Information

CAS Number 1469703-61-4
Full Name 2,4,5,6-Tetra(3,6-dimethylcarbazol-9-yl)-1,3-dicyanobenzene
Synonyms m4CzIPN, 2,4,5,6-Tetrakis(3,6-dimethyl-9H-carbazol-9-yl)-1,3-benzenedicarbonitrile, 2,4,5,6-tetrakis(3,6-dimethyl-9H-carbazol-9-yl)isophthalonitrile
Chemical Formula C64H48N6
Molecular Weight 901.11 g/mol
HOMO/LUMO HOMO = 5.90 eV, LUMO = 2.81 eV [1]
Classification / Family Carbazole derivatives, Isophthalonitriles, TADF materials, Yellow dopant materials, Sublimed materials

Chemical Structure

4CzIPN-Me chemical structure, 1469703-61-4
Chemical Structure of 2,4,5,6-Tetra(3,6-dimethylcarbazol-9-yl)-1,3-dicyanobenzene (4CzIPN-Me), CAS 1469703-61-4

Product Details

Purity Unsublimed >98.0% (1H NMR)
Melting Point N/A
Appearance Orange powder/crystals

Device Structure(s)

Device Structure ITO (100 nm)/HAT-CN (10 nm)/TAPC (30 nm)/6.3mol%-4CzIPN-Me:mCBP (30 nm)/T2T (10 nm)/Alq3 (55 nm)/LiF (0.8 nm)/Al (100 nm) [2]
Colour yellow light emitting device  Greenish Yellow
Max. Current Efficiency 73 cd/A
Max. EQE 21%
LT50@1,000 cd/m2 1472 h
Device Structure ITO (100 nm)/HAT-CN (10 nm)/TAPC (30 nm)/0.65mol%-TBRb:6.3mol%-4CzIPN-Me:mCBP (30 nm)/T2T (10 nm)/Alq3 (55 nm)/LiF (0.8 nm)/Al (100 nm) [2]
Colour orange light emitting device  Orange
Max. Current Efficiency 62 cd/A
Max. EQE 19.1%
LT50@1,000 cd/m2 3775 h

Pricing

Grade Order Code Quantity Price
Unsublimed (>98.0% purity) M2380 250 mg £240
Unsublimed (>98.0% purity) M2380 500 mg £400
Unsublimed (>98.0% purity) M2380 1 g £640

MSDS Documentation

4CzIPN-Me4CzIPN-Me MSDS Sheet

Literature and Reviews

  1. Efficiency loss processes in hyperfluorescent OLEDs: A kinetic Monte Carlo study, S. Gottardi et al., Appl. Phys. Lett., 114, 073301 (2019); DOI: 10.1063/1.5079642.
  2. Dual enhancement of electroluminescence efficiency and operational stability by rapid upconversion of triplet excitons in OLEDs, T. Furukawa et al., Sci Rep., 5, 8429 (2015); DOI: 10.1038/srep08429.
  3. High Efficiency in a Solution-Processed Thermally Activated Delayed-Fluorescence Device Using a Delayed-Fluorescence Emitting Material with Improved Solubility, Y. Cho et al., Adv. Mater., 26 (38), 6642-6646 (2014); DOI: 10.1002/adma.201402188.
  4. A Novel Sterically Bulky Hole Transporter to Remarkably Improve the Lifetime of Thermally Activated Delayed Fluorescent OLEDs at High Brightness, T. Kamata et al., Chem. Euro. J., 24 (18), 4590-4596 (2017); DOI: 10.1002/chem.201705262.
  5. Energy transfer processes in hyperfluorescent organic light-emitting diodes, E. Cho et al., J. Mater. Chem. C, 10, 4629-4636 (2022); DOI: 10.1039/D1TC05090G.
  6. Design of thermally activated delayed fluorescent sensitizers for high efficiency over 20% and long lifetime in yellow fluorescent organic light-emitting diodes, J. Ki met al., J. Mater. Chem. C, 8, 5265-5272 (2020); DOI: 10.1039/D0TC00178C.
  7. Photophysical Properties and Efficient, Stable, Electrogenerated Chemiluminescence of Donor–Acceptor Molecules Exhibiting Thermal Spin Upconversion, R. Ishimatsu et al., Chem. Euro. J., 22 (14), 4889-4898 (2016); DOI: 10.1002/chem.201600077.
  8. Recent Progress of Singlet-Exciton-Harvesting Fluorescent Organic Light-Emitting Diodes by Energy Transfer Processes. S. Byeon et al., Adv. Mater., 31 (34), 1803714 (2019); DOI: 10.1002/adma.201803714.

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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