Ac-CNP, or 5,6-bis(4-(9,9-dimethylacridin-10(9H)-yl)phenyl)pyrazine-2,3-dicarbonitrile (CAS 1883400-34-7), is a thermally activated delayed fluorescence (TADF) emitter that gives yellow to orange light. It is supplied in sublimed grade, with purity above 98.0% by HPLC, for building high-efficiency TADF-OLEDs.
The molecule pairs a pyrazine acceptor carrying two cyano groups with two acridine donors, linked through phenyl bridges. This arrangement creates a bipolar A-π-D electronic structure. In toluene it absorbs at 282 nm and 436 nm and fluoresces at 620 nm, with HOMO and LUMO levels of 5.40 eV and 3.10 eV.
Ac-CNP reaches a photoluminescence quantum yield (PLQY) of 67%. When doped into an mCP host, reported devices delivered a maximum external quantum efficiency of 13.3%, current efficiency of 38.1 cd/A and power efficiency of 26.1 lm/W, with orange-red emission at CIE (0.47, 0.51).
- Emissive dopant in the light-emitting layer of yellow to orange TADF-OLEDs.
- Guest emitter in mCP host films for orange-red OLED devices.
- Research into donor-acceptor molecular design of TADF emitters.
- Photophysical studies of acridine and dicyanopyrazine based materials.
| Brand | Ossila |
|---|---|
| CAS number | 1883400-34-7 |
| Molecular formula | C48H36N4 |
| Purity | Sublimed >98.0% (HPLC) |
| Category | — |
| Pack sizes | 100 mg, 250 mg, 500 mg, 1 g |
| Physical form | Orange powder/crystals |
| Storage | — |
- Product code: M2389A1
- Molecular Weight: 696.84 g/mol
- Absorption: λ max 282 nm, 436 nm in toluene
- Fluorescence: λ max 620 nm in toluene
- HOMO/LUMO: HOMO = 5.40 eV, LUMO = 3.10 eV
- PLQY: 67%
- Device Color: Orange Red CIE (0.47, 0.51)
- Max. EQE: 13.3%
- Max. Current Efficiency: 38.1 cd/A
- Max. Power Efficiency: 26.1 lm/W
- Classification: Acridine derivatives, Pyrazines, TADF yellow to orange dopant, Sublimed small molecules
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