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.
|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 |
|Classification / Family||Carbazole, TADF materials, Green dopant materials, Sublimed materials|
|Purity||Sublimed >99.0% (1H NMR)|
|Melting point||> 360 °C (lit.)
*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.
|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|
|Max. Current Efficiency||62.9 cd/A|
|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|
|Max. Current Efficiency||36.4cd/A|
|Max. Power Efficiency||32.7 Im/W|
*For chemical structure information, please refer to the cited references.
|Sublimed (>99.0% purity)||M2214A1||250 mg||£269.00|
|Sublimed (>99.0% purity)||M2214A1||500 mg||£439.00|
|Sublimed (>99.0% purity)||M2214A1||1 g||£691.00|
Literature and Reviews
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.
- 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.
- Highly efficient organic light-emitting diodes from delayed fluorescence, H. Uoyama et al., Nature 492, 234–238 (2012); doi.org/10.1038/nature11687.
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