ACRSA
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 optical 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 for OLED devices.
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 | £220 |
| Sublimed (>99.0% purity) | M2118A1 | 500 mg | £360 |
| Sublimed (>99.0% purity) | M2118A1 | 1 g | £620 |
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.
To the best of our knowledge the information provided here is accurate. However, Ossila assume no liability for the accuracy of this page. The values provided are typical at the time of manufacture and may vary over time and from batch to batch. All products are for laboratory and research and development use only, and may not be used for any other purpose including health care, military, pharmaceuticals, cosmetics, food, or commercial applications.