|Molecular weight||435.52 g/mol|
|Absorption||λmax 430 nm|
|Fluorescene||λem 490 nm|
|HOMO/LUMO||ΔEST = 0.03 eV (ES1 = 2.55 eV, ET1 = 2.52 eV) |
|Classification / Family||Acridine derivatives, Green emitter, Light-emitting diodes, Organic electronics, TADF materials, Sublimed materials.|
|Purity||Sublimed >99.9% (HPLC)|
*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.
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 green emitter with a relatively small ΔEST of 0.03 eV.
|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) |
|Colour||Blue - greenish|
|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) |
|Max Current Efficiency||27 cd/A|
|Max. Power Efficiency||18 lm W-1|
*For chemical structure information, please refer to the cited references.
Literature 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.