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Product Code M801
Price $300.00 ex. VAT

Ir(dmpq)2(acac), highly efficient red phosphorescent emitter

A dopant material for OLEDs and available online for priority dispatch

Bis(2-(3,5-dimethylphenyl)quinoline-C,N)(acetylacetonato)iridium(III), also known as Ir(dmpq)2(acac), is a highly efficient red phosphorescent emitter that is employed as a dopant material in organic light-emitting diodes (OLEDs).

Compared with Ir(phq)2acac,  Ir(dmpq)2(acac) has a higher quantum efficiency. The dmpq ligand is methylated version of the phq (2-phenylquinoline) ligand, with methyl substitutions on the phenyl group. It is believed that the higher efficiency is a result of this methylation of the phq ligand.

General Information

CAS number 1056874-46-4
Chemical formula C39H35IrN2O2
Molecular weight 755.94 g/mol 
Absorption* λmax 434 nm (in CH2Cl2) [1]
Fluorescence λem 594 nm (in CH2Cl2)
HOMO/LUMO HOMO = 5.31 eV, LUMO = 3.26 eV [2]
  • Bis(2-(3,5-dimethylphenyl)quinoline-C2,N')(acetylacetonato)iridium(III)
  • Ir(mpq)2(acac)
  • Ir(mphq)2(acac)
Classification / Family Red dopant material, Organic Light-Emitting Diodes (OLEDs), Organic electronics

* Measurable with an Optical Spectrometer, see our spectrometer application notes.

Product Details

Purity >99.5% (sublimed*)
Melting point n/a
Appearance Dark-red powder/crystals

* Sublimation is a technique used to obtain ultra pure-grade chemicals, see sublimed materials for OLED devices.

Chemical Structure

Chemical structure of Ir(dmpq)2(acac)
Chemical Structure of Bis(2-(3,5-dimethylphenyl)quinoline-C2,N')(acetylacetonato)iridium(III)

Device Structure(s)

Device structure ITO/DNTPD (40 nm)/Bebq2:Ir(dmpq)2(acac) (3%, 30 nm)/Bebq2 (20 nm)/LiF (0.5 nm)/Al (100 nm) [1]
Colour Red red light emitting device
Max. Current Efficiency 20.3 cd/A
Max. Power Efficiency 23.9 lm W−1  
Device structure  ITO (150 nm)/TAPC(20 nm)/ TCTA (10 nm)/ TCTA:B3PYMPM* :Ir(ppy)2(acac):Ir(mphq)2(acac) (30 nm, 8 wt%, 0.5 wt%)/ B3PYMPM (45 nm)/ LiF (0.7 nm)/Al (100 nm) [2]
Colour Orange orange light emitting device
Max. EQE 25.4%
Max. Power Efficiency 49.5 lm W−1  
Device structure  ITO (150 nm)/TAPC (20 nm)/TCTA (10 nm)/TCTA:B3PYMPM* :Ir(dmpq)2(acac) (5 nm, 3 wt%)/TCTA:B3PYMPM:Ir(ppy)2(acac) (25 nm, 8 wt%)/B3PYMPM (45 nm)/LiF (0.7 nm)/Al (100 nm) [3]
Colour Orange orange light emitting device
Max. EQE 22.8%
Max. Power Efficiency 70.1 lm W−1  
Device structure p-PI (2 mm)/ITO (120 nm)/MoO3 (5nm)/TAPC (50 nm)/TCTA:Ir(dmpq)2(acac) (10 wt%, 6 nm)/TCTA (2 nm)/TCTA:FIrpic (20 wt%, 4 nm)/TPBi (2 nm)/TPBi:Ir(ppy)3 (8 wt% 6 nm)/TPBi (75 nm)/LiF/Al [4]
Colour White white light emitting device
EQE@ 3 mA/cm2 19.0%
Power Efficiency@ 100 cd/m2 32.1 lm W−1
Device structure ITO (100 nm)/TAPC (75 nm)/NPB (10 nm)/NPB:B3PYMPM:Ir(mphq)2acac (30 nm, 3.5 mol%)/ B3PYMPM (10 nm)/B3PYMPM:Rb2CO3 (45 nm, 2 wt%)/Al (100 nm)
Colour Red red light emitting device
Max. EQE 27.6%

*For chemical structure information, please refer to the cited references.


HPLC trace Ir(dmpq)2(acac)
Bis(2-(3,5-dimethylphenyl)quinoline-C2,N')(acetylacetonato)iridium(III), Ir(dmpq)2(acac).


Grade Order Code Quantity Price
Sublimed (>99.5% purity) M801 100 mg £240
Sublimed (>99.5% purity) M801 250 mg £480
Sublimed (>99.5% purity) M801 500 mg £850
Sublimed (>99.5% purity) M801 1 g £1450

MSDS Documentation

Ir(dmpq)2(acac) MSDSIr(dmpq)2(acac) MSDS sheet

Literature and Reviews

  1. Highly Efficient Red Phosphorescent Dopants in Organic Light-Emitting Devices, D. Kim et al., Adv. Mater., 23, 2721–2726 (2011); DOI: 10.1002/adma.201100405.
  2. Low Roll-Off and High Effi ciency Orange Organic Light Emitting Diodes with Controlled Co-Doping of Green and Red Phosphorescent Dopants in an Exciplex Forming Co-Host, S. Lee et al., Adv. Funct. Mater., 23, 4105–4110 (2013); DOI: 10.1002/adfm.201300187.
  3. High efficiency and non-color-changing orange organic light emitting diodes with red and green emitting layers, S. Lee et al., Org. electronics, Organic 14, 1856–1860 (2013); 
  4. Enhanced Outcoupling in Organic Light-Emitting Diodes via a High-Index Contrast Scattering Layer, T-W. Koh et al., ACS Photonics, 2, 1366−1372 (2015); DOI: 10.1021/acsphotonics.5b00346.
  5. Phosphorescent dye-based supramolecules for high-efficiency organic light-emitting diodes, K-H. Kim et al., Nat. commun., 5, 4769; DOI: 10.1038/ncomms5769.

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, pharmaceuticals, cosmetics, food or commercial applications.

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