Ir(dmpq)2(acac)

Order Code: M801
MSDS sheet

Price

(excluding Taxes)

£189.00


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]
Synonyms 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

 

Product Details

Purity Sublimed* >99.8
Melting point n.a.
Colour Dark-red powder/crystals

*Sublimation is a technique used to obtain ultra pure grade chemicals to get rid of mainly trace metals and inorganic impurities. Sublimation happens under certain pressure for chemicals to only go through two physical stages, from a solid sate to vapour (gas) and then the vapour condensed to a solid state on a cool surface (referred to as cold finger). The most typical examples of sublimation are iodine and dry ice. For more details about sublimation, please refer to sublimed materials for OLEDs and perovskites and our collection of sublimed materials.

 

Chemical Structure

chemical structure of Ir(dmpq)2(acac)Chemical Structure of Bis(2-(3,5-dimethylphenyl)quinoline-C2,N')(acetylacetonato)iridium(III), Ir(dmpq)2(acac), CAS No. 1056874-46-4; Chemical Formula C39H35IrN2O2.

 

Applications

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 and it is believed that the methylation of the quinoline ring of the phq ligand is the main reason for this.

 

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
Max. Current Efficiency 20.3 cd/A
Max. Power Efficiency 23.9 lm W1  
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
Max. EQE 25.4%
Max. Power Efficiency 49.5 lm W1  
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
Max. EQE 22.8%
Max. Power Efficiency 70.1 lm W1  
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
EQE@ 3 mA/cm2 19.0%
Power Efficiency@ 100 cd/m2 32.1 lm W1
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
Max. EQE 27.6%

*For chemical structure informations please refer to the cited references.

 

Characterisation

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

 

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); http://dx.doi.org/10.1016/j.orgel.2013.04.020. 
  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.