FREE shipping to on qualifying orders when you spend or more, processed by Ossila BV. All prices ex. VAT. Qualifying orders ship free worldwide! Fast, secure, and backed by the Ossila guarantee. It looks like you are visiting from , click to shop in or change country. Orders to the EU are processed by our EU subsidiary.

It looks like you are using an unsupported browser. You can still place orders by emailing us on info@ossila.com, but you may experience issues browsing our website. Please consider upgrading to a modern browser for better security and an improved browsing experience.


Product Code M2118A1-250mg
Price $300 ex. VAT

Quality assured

Expert support

Volume discounts

Worldwide shipping

Fast and secure


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.

Chemical Structure

acrsa chemical structure
Chemical structure of ACRSA

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 bluish-green light emitting device
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 blue light emitting device
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 MSDSACRSA MSDS sheet

Literature and Reviews

  1. 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.
  2. High-efficiency organic light-emitting diodes with fluorescent emitters, H. Nakanotani et al., Nat. Commun., 5:4016 (2014); DOI: 10.1038/ncomms5016.
  3. 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. The values provided are typical at the time of manufacture and may vary over time and from batch to batch. Products may have minor cosmetic differences (e.g. to the branding) compared to the photos on our website. All products are for laboratory and research and development use only.

Return to the top