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Product Code M2380B1-250mg
Price £240 ex. VAT

A TADF yellow emitter

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

Specifications | Pricing and Options | MSDS | Literature and Reviews

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


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


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.
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