4CzTPN-Me, or 2,3,5,6-tetrakis(3,6-dimethylcarbazol-9-yl)-1,4-dicyanobenzene (CAS 1416881-54-3), is a thermally activated delayed fluorescence (TADF) material supplied by Ossila as sublimed grade M2215A2 with a purity above 99.0% by 1H NMR. It is the methylated version of 4CzTPN and comes as an orange powder or crystals.
The molecule carries four bulky, electron-donating carbazolyl groups around a dicyanobenzene core, which makes it strongly sterically hindered and twisted. It is part of the carbazolyl dicyanobenzene (CDCB) family, one of the earliest groups of TADF emitters developed for third-generation, highly efficient delayed fluorescence devices, and is classed as a yellow-greenish dopant.
Its twisted geometry and distinctive charge transfer behaviour give it potential in luminescent solar concentrators, where it can show almost zero re-absorption losses, opening a route to efficient, low-cost solar energy harvesting. Sublimation is used to reach this ultra-pure grade.
- Emitter or dopant in TADF-based delayed fluorescence devices such as OLEDs.
- Yellow-greenish dopant material in organic light-emitting research.
- Dye for luminescent solar concentrators with almost zero re-absorption losses.
- Research into high-efficiency, low-cost solar energy generation.
| Brand | Ossila |
|---|---|
| CAS number | 1416881-54-3 |
| Molecular formula | C64H48N6 |
| Purity | Sublimed >99.0% (1H NMR) |
| Category | — |
| Pack sizes | 100 mg, 250 mg, 500 mg |
| Physical form | Orange powder/crystals |
| Storage | — |
- Product code: M2215A2
- Full name: 2,3,5,6-tetrakis(3,6-dimethylcarbazol-9-yl)-1,4-dicyanobenzene
- Synonym: 2,3,5,6-tetrakis(3,6-dimethyl-9H-carbazol-9-yl)terephthalonitrile
- Molecular weight: 901.10 g/mol
- Absorption: λmax 498 nm in toluene
- Fluorescence: λem 561 nm in toluene
- HOMO/LUMO: HOMO = 5.69 eV, LUMO = 2.90 eV
- Classification / Family: Carbazole, Terephthalonitrile, TADF materials, Yellow-greenish dopant materials, Sublimed materials
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