DMAC-BP, bis[4-(9,9-dimethyl-9,10-dihydroacridine)phenyl]methanone is better known as a green Thermally Activated Delayed Fluorescence (TADF) emitter.
Due to the short conjugation length of the DMAC and BP group, a higher energy of the lowest locally-excited triplet state (3LE) is achieved. This energy is almost equal to that of the triplet charge-transfer state (3CT). The difference of the lowest singlet and triplet excited states ΔEST is 0.07 eV [2].
Compared to mCP-doped films, neat films of DMAC–BP have a slightly red-shifted emission band with a maximum of 506 nm, a slightly lower photoluminescence quantum yield (PLQY) of 0.85, and TADF lifetime of 2.7 μs.
General Information
| CAS number | 1685287-55-1 |
| Chemical formula | C43H36N2O |
| Molecular weight | 596.76 g/mol |
| Absorption | n/a |
| Fluorescence | λem 506 nm (in film) |
| HOMO/LUMO | HOMO = -5.8 eV, LUMO = -3.1 [1] |
| Synonyms | Bis[4-(9,9-dimethyl-9,10-dihydroacridine)phenyl]methanone |
| Classification / Family | Electron transport layer (ETL) materials, Solution-processed OLED materials, TADF green emitter materials, PHOLEDs, Sublimed materials |
Product Details
| Purity | >99.0% (sublimed) |
| Melting Point | TGA Td = 410 oC (5% weight loss) |
| Appearance | Light yellow powder/crystals |
*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.
Chemical Structure
Device Structure(s)
| Device structure | ITO/HATCN (5 nm)/NPB (40 nm)/TCTA (10 nm)/DMAC-BP:DMIC-TRZ (30 nm)/B3PyMPM (40 nm)/LiF (1 nm)/Al (150 nm) [1] |
| Colour | Green  |
Max. Power Efficiency | 52.9 lm W−1 |
| Max. EQE | 21% |
| Device structure | ITO/HATCN (5 nm)/NPB (40 nm)/TCTA (10 nm)/DMAC-BP:26DCzPPy (30 nm)/B3PyMPM (40 nm)/LiF (1 nm)/Al (150 nm) [1] |
| Colour | Green |
Max. Power Efficiency | 38.4 lm W−1 |
| Max. EQE | 19% |
| Device structure | ITO/MoO3 (1 nm)/DMAC-BP (60 nm)/TPBi (60 nm)/LiF (1 nm)/Al [2] |
| Colour | Green |
Max. Luminance | 51,100 cd/m2 |
Power Efficiency@100 cd/m2 | 25 lm W−1 |
| Max. EQE | 10.6% |
| Device structure | ITO/MoO3 (1 nm)/mCP (40 nm)/DMAC-BP (30 nm)/TPBi (50 nm)/LiF (1 nm)/Al [2] |
| Colour | Green |
Max. Luminance | 45,300 cd/m2 |
Power Efficiency@100 cd/m2 | 59 lm W−1 |
| Max. EQE | 18.9% |
Pricing
| Grade | Order Code | Quantity | Price |
| Sublimed (>99.0% purity) | M2090A1 | 100 mg | £229.00 |
| Sublimed (>99.0% purity) | M2090A1 | 250 mg | £457.00 |
| Sublimed (>99.0% purity) | M2090A1 | 500 mg | £777.00 |
MSDS Documentation
DMAC-BP MSDS sheet
Literature and Reviews
- Highly Efficient Full-Color Thermally Activated Delayed Fluorescent Organic Light-Emitting Diodes: Extremely Low Efficiency Roll-Off Utilizing a Host with Small Singlet–Triplet Splitting, D. Zhang et al., ACS Appl. Mater. Interfaces, 9 (5), 4769–4777 (2017); DOI: 10.1021/acsami.6b15272.
- Nearly 100% Internal Quantum Effi ciency in Undoped Electroluminescent Devices Employing Pure Organic Emitters, Q, Zhang et al., Adv. Mater., 27, 2096–2100 (2015); DOI: 10.1002/adma.201405474.
- Undoped highly efficient green and white TADF-OLEDs developed by DMAC-BP: manufacturing available via interface engineering, X. Jiang et al., J Mater Sci: Mater Electron (2020). DOI: 0.1007/s10854-020-04450-z.
- Singlet–Triplet Splitting Energy Management via Acceptor Substitution: Complanation Molecular Design for Deep-Blue Thermally Activated Delayed Fluorescence Emitters and Organic Light-Emitting Diodes Application, X. Cai et al., Adv. Funct. Mater.,26, 8042–8052 (2016); DOI: 10.1002/adfm.201603520.
To the best of our knowledge the technical information provided here is accurate. However, Ossila assume no liability for the accuracy of this information. The values provided here are typical at the time of manufacture and may vary over time and from batch to batch.
