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Product Code M2184A1
Price $455.00 ex. VAT

Ir(MDQ)2(acac) has a 2-methyldibenzo[f,h]quinoxaline ligand that coordinates with the iridium metal center via the formation of Ir-N and Ir-C bonds.

Ir(MDQ)2(acac) is another family member of iridium complexes, which are the most effective phosphorescent emitters employed in OLEDs. Devices based on Ir(MDQ)2(acac) emit orange-red light, with a maximum emission of 600-614 nm. OLEDs with Ir(MDQ)2(acac) as an emitting layer material give great brightness and exceedingly-high external quantum, current, and power efficiencies.

General Information

CAS number 536755-34-7
Full name Bis(2-methyldibenzo[f,h]quinoxaline)(acetylacetonate) iridium(III)
Chemical formula C39H29N4O2Ir
Molecular weight 777.89 g/mol
Absorption λmax 370 nm in DCM
Fluorescence λmax 608 nm in THF
HOMO/LUMO HOMO = 5.4 eV, LUMO = 2.8 eV [1]
Classification / Family Iridium complexes, Phosphorescent red-orange emitter, Sublimed materials, Organic electronics.

Product Details

Purity Sublimed
Melting point n/a
Appearance Red crystals/powder

Chemical Structure

Ir(MDQ)2(acac) structure
Chemical structure of Ir(MDQ)2(acac)

Device Structure(s)

Device structure ITO/MoO3 (3 nm)/TAPC (40 nm)/Ir(MDQ)2(acac) (2 wt%):26DCzPPy (10 nm)/TmPyPB (40 nm)/LiF (1 nm)/Al (100 nm) [1]
Colour Red red
Max. Power Efficiency 24.39 lm W1
Max. Current Efficiency 35.2 cd/A
Max. EQE 12.3%
Device structure ITO/MoO3 (3 nm)/TAPC (40 nm)/Ir(MDQ)2(acac) (2 wt%):TcTa (10 nm)/Ir(MDQ)2(acac) (2 wt%):26DCzPPy (10 nm)/TmPyPB (40 nm)/LiF (1 nm)/Al (100 nm) [1]
Colour Red red
Max. Power Efficiency 40.19 lm W1
Max. Current Efficiency 44.76 cd/A
Max. EQE 15.5%
Device structure ITO/HAT-CN (10 nm)/TAPC (45 nm)/TCTA (10 nm)/Ir(MDQ)2(acac) (0.02 nm)/Ir(ppy)2(acac) (0.02 nm)/FIrpic (0.3 nm)/TmPyPb (40 nm)/ Liq (2 nm)/Al (120 nm) [2]
Colour White white
Max. Power Efficiency 46.1 lm W1
Max. Current Efficiency 45.5 cd/A
Max. EQE 17.6%
Device structure ITO/HAT-CN (10 nm)/TAPC (45 nm)/TCTA (7 nm)/Ir(ppy)2(acac) (0.02 nm)/FIrpic (0.3 nm)/TCTA (3 nm)/ Ir(MDQ)2(acac) (0.02 nm)/TmPyPb (3 nm)/Ir(ppy)2(acac) (0.02 nm)/FIrpic (0.3 nm)/TmPyPb (37 nm)/Liq (2 nm)/Al (120 nm) [2]
Colour White white
Max. Power Efficiency 43.1 lm W1
Max. Current Efficiency 44.0 cd/A
Max. EQE 17.2%
Device structure NPB (50 nm)/Ir(MDQ)2(acac):CBP(5.7%, 30 nm)/T PBI (15 nm)/Alq (35 nm) [3]
Colour Red red
Max. Power Efficiency 13.7 lm W1
Max. Current Efficiency 26.2 cd/A
Max. EQE 12.4
Device structure ITO/HAT-CN (10 nm)/SAFDPA (45 nm)/ SAFDPA:Bphen (1:1, w/w):Ir(MDQ)2(acac) (2 wt %, 20 nm)/Bphen (45 nm)/Liq (2 nm)/Al (120 nm) [4]
Colour Reddish Orange orange
Max. Power Efficiency 31.8 lm W1
Max. Current Efficiency 32.0 cd/A
Max. EQE 10.7%

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


Grade Order Code Quantity Price
Sublimed (>98% purity) M2184A1 250 mg £350.00
Sublimed (>98% purity) M2184A1 500 mg £650.00
Sublimed (>98% purity) M2184A1 1 g £1200.00

MSDS Documentation

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

Literature and Reviews

  1. High performance red organic electroluminescent devices based on a trivalent iridium complex with stepwise energy levels, Y. Li et al., : RSC Adv., 6, 71282 (2016); DOI: 10.1039/c6ra16517f.
  2. Highly Efficient White Organic Light-Emitting Diodes with Ultrathin Emissive Layers and a Spacer-Free Structure, S. Wu et al., Sci. Rep., 6:25821 (2016); DOI: 10.1038/srep25821.
  3. New Iridium Complexes as Highly Efficient Orange–Red Emitters in Organic Light‐Emitting Diodes, J. Duan et al., Adv. Mater., 15 (3), 224-228 (2003); doi: 10.1002/adma.200390051.
  4. Highly Simplified Reddish Orange Phosphorescent Organic Light-Emitting Diodes Incorporating a Novel Carrier- and Exciton-Confining Spiro-Exciplex-Forming Host for Reduced Efficiency Roll-off, T. Xu et al., ACS Appl. Mater. Interfaces, 9, 2701−2710 (2017); DOI: 10.1021/acsami.6b13077.

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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