Product Code M2214A1
Price loading

4CzTPN, namely 2,3,5,6-tetrakis(carbazol-9-yl)-1,4-dicyanobenzene, is one of the three isomers of 4CzPN and 4CzIPN.

4CzTPN is normally used in thermally activated delayed fluorescence (TADF) device as green dopant materials. When it is compared with 4CzIPN, it has lower photoluminescence quantum efficiency and a shorter lived triplet lifetime due to the fact that 4CzIPN can widely disperse its highest occupied molecular orbital (HOMO) over the donor carbazolyl moieties.

General Information

CAS number 1416881-53-2
Full name 2,3,5,6-tetrakis(carbazol-9-yl)-1,4-dicyanobenzene
Chemical formula C56H32N6
Molecular weight 788.27 g/mol
Absorption λmax 328, 344, 485 nm in toluene
Fluorescene λem 538 nm in toluene
HOMO/LUMO HOMO = 5.73 eV, LUMO = 2.82 eV; T1=2.15 eV [1]
Classification / Family Carbazole, TADF materials, Green dopant materials, Sublimed materials

Product Details

Purity Sublimed >99.0% (1H NMR)
Melting point > 360 °C (lit.)
Appearance Orange powder/crystals

*Sublimation is a technique used to obtain ultra pure-grade chemicals. For more details about sublimation, please refer to the Sublimed Materials for OLED devices page.

Chemical Structure

Chemical Structure of 2,3,5,6-tetrakis(carbazol-9-yl)-1,4-dicyanobenzene (4CzTPN).

Device Structure(s)

Device structure ITO/MoO3 (6 nm)/NPB (70 nm)/mCP (5 nm)/SFXSPO*:4CzTPN (20 nm, 5%wt.)/SFXSPO (5 nm)/TPBi (30 nm)/LiF (1 nm)/Al
Colour Green green
Max. Current Efficiency 62.9 cd/A
Max. EQE 19.6%
Max. Power Efficiency 54.9 Im/W


Device structure ITO/MoO3 (6 nm)/NPB (70 nm)/mCP (5 nm)/mCP:4CzTPN (20 nm, 5%wt.)/SFXSPO* (5 nm)/TPBi (30 nm)/LiF (1 nm)/Al
Colour Green green
Max. Current Efficiency 36.4cd/A
Max. EQE 11.4%
Max. Power Efficiency 32.7 Im/W

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

MSDS Documentation



Grade Order Code Quantity Price
Sublimed (>99.0% purity) M2104A1 250 mg £269.00
Sublimed (>99.0% purity) M2104A1 500 mg £439.00
Sublimed (>99.0% purity) M2104A1 1 g £691.00


Literature and Reviews

  1. Electrogenerated Chemiluminescence of Donor–Acceptor Molecules with Thermally Activated Delayed Fluorescence, R. Ishimatsu et al., Angew. Chem., 53 (27), 6993-6996 (2014); doi: 10.1002/anie.201402615.10.1002/adma.200802546.
  2. A Significantly Twisted Spirocyclic Phosphine Oxide as a Universal Host for High‐Efficiency Full‐Color Thermally Activated Delayed Fluorescence Diodes, J. Li et al., Adv. Mater., 28 (16), 3122-3130 (2016); DOI: 10.1002/adma.201506286.
  3. Highly efficient organic light-emitting diodes from delayed fluorescence, H. Uoyama et al., Nature 492, 234–238 (2012); doi.org/10.1038/nature11687.

To the best of our knowledge the technical information provided here is accurate. However, Ossila assume no liability for the accuracy of this information. The values provided here are typical at the time of manufacture and may vary over time and from batch to batch.