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 ΔE_ST  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

1. 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.
2. 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.
3. 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.
4. 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.

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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.

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