ACRSA
CAS Number 1206626-95-0
Dopant Materials, High Purity Sublimed Materials, Materials, OLED Materials, Semiconducting Molecules, TADF Materials
ACRSA, efficient TADF material
Blue-greenish emitter available online for priority dispatch
10-phenyl-10H,10′H-spiro[acridine-9,9′-anthracen]-10′-one (ACRSA) is one of the few spiro compounds known to exhibit efficient thermally activated delayed fluorescence (TADF). Its bichromophoric structure consists of a weakly-coupled acridine moiety as an electron-donating unit and an anthracenone moiety as an electro-accepting group. These are covalently linked by a spiro-junction in such a way that the respective π systems are orthogonal.
ACRSA is also known as an aromatic ketone-derived blue-greenish emitter with a relatively small ΔEST of 0.03 eV.
General Information
| CAS number | 1206626-95-0 |
|---|---|
| Chemical formula | C32H21NO |
| Molecular weight | 435.52 g/mol |
| Absorption* | λmax 430 nm |
| Fluorescence | λem 490 nm |
| HOMO/LUMO | ΔEST = 0.03 eV (ES1 = 2.55 eV, ET1 = 2.52 eV) [1] |
| Synonyms | 10-phenyl-10H,10′H-spiro[acridine-9,9′-anthracen]-10′-one |
| Classification / Family | Acridine derivatives, Greenish blue emitter, Light-emitting diodes, Organic electronics, TADF materials, Sublimed materials. |
* Measurable with an USB spectrometer, see our spectrometer application notes.
Product Details
| Purity | Sublimed >99.0% (HPLC) |
|---|---|
| Melting point | TGA: >250 °C (0.5% weight loss) |
| Appearance | Off-white crystals/powder |
* Sublimation is a technique used to obtain ultra pure-grade chemicals, see sublimed materials.
Chemical Structure
Device Structure(s)
| Device structure | ITO/a-NPD (40 nm)/mCP (10 nm)/20 wt% ACRSA:DPEPO (15 nm)/DPEPO (3.5 nm)/TPBi (41.5 nm)/LiF (0.8 nm)/Al (80 nm) [1] |
|---|---|
| Colour | Bluish-Green 
|
| Max EQE | 16.4% |
| Max. Photo-luminescence | 81% |
| Device structure | ITO/a-NPB (35 nm)/mCP (10 nm)/1 wt%-TBPe: 15wt%-ACRSA: DPEPO (15 nm)/DPEPO (8 nm)/TPBi (57 nm)/LiF (0.8 nm)/Al (100 nm) [2] |
|---|---|
| Colour | Blue 
|
| Max Current Efficiency | 27 cd/A |
| Max EQE | 13.4% |
| Max. Power Efficiency | 18 lm W-1 |
*For chemical structure information, please refer to the cited references.
Pricing
| Grade | Order Code | Quantity | Price |
|---|---|---|---|
| Sublimed (>99.0% purity) | M2118A1 | 250 mg | £240 |
| Sublimed (>99.0% purity) | M2118A1 | 500 mg | £400 |
| Sublimed (>99.0% purity) | M2118A1 | 1 g | £680 |
MSDS Documentation
ACRSA MSDS sheetLiterature and Reviews
- A highly luminescent spiro-anthracenone-based organic light-emitting diode exhibiting thermally activated delayed fluorescence, K. Nasu et al., Chem. Comm. 49, 10385 (2013); DIO: 10.1039/C3CC44179B.
- High-efficiency organic light-emitting diodes with fluorescent emitters, H. Nakanotani et al., Nat. Commun., 5:4016 (2014); DOI: 10.1038/ncomms5016.
- Climbing up the Ladder: Intermediate Triplet States Promote the Reverse Intersystem Crossing in the Efficient TADF Emitter ACRSA, I. Lyskov et al., J. Phys. Chem. C, 121, 21145−21153 (2017); DOI: 10.1021/acs.jpcc.7b06187.