Ir(piq)2(acac)


Product Code M671
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Bis(1-phenylisoquinoline)(acetylacetonate)iridium(III), Ir(piq)2(acac) is widely used as an efficient phosphorescent red emitter dopant material in PhOLED devices. It was reported that the piq ligand can partially suppress the triplet-triplet annihilation and show short phosphorescent lifetime [2].

General Information

CAS number 435294-03-4
Chemical formula C35H27IrN2O2
Molecular weight 699.82 g/mol
Absorption λmax 302 nm in THF
Phosphorescence λem  633 nm in THF
HOMO/LUMO HOMO = 5.0 eV, LUMO = 3.0 eV [1]
Synonyms
  • (piq)2Ir(acac)
  • Bis(1-phenylisoquinoline)(acetylacetonate)iridium(III)
Classification / Family Organometallic complex, Phosphorescent red emitter, Red dopant, OLED and PLED materials, Sublimed materials

Product Details

Purity

>99.5% (sublimed)

>99.0% (unsublimed)

Melting point 366-370 °C (lit.)
Appearance Red 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

Chemical structure of tiopc ir(piq)2(acac)
Chemical Structure of Bis(1-phenylisoquinoline)(acetylacetonate)iridium(III), Ir(piq)

Device Structure(s)

Device structure  ITO/m-MTDATA (30 nm)/NPB (20 nm)/TPBI:4 wt% Ir(ppy)3:2 wt% Ir(piq)2(acac) (30 nm)/ Alq3(20 nm)/LiF/Al [3]
Colour White white
Max. Luminance 33,012 cd/m2
Current Efficiency@100  cd/m2 15.3 cd/A
Max. Powder Efficiency 10.7 lm W1
Device structure ITO/DNTPD* (60 nm)/NPB (20 nm)/mCP (10 nm)/mCP:FIrpic (25 nm)/CBP:Ir(piq)2acac (5 nm)/BCP (5 nm)/Alq3 (20 nm)/LiF (1 nm)/Al (200 nm) [4]                   
Colour White white
EQE@500 cd/m2 8.2 %
Current Efficiency@500 

cd/m2

12.7 lm W1
Device structure ITO/NPB (20 nm)/TCTA (10 nm)/BIQS*:(piq)2Ir(acac) ( 4 wt%, 30 nm)/BCP (15 nm)/Alq3 (50 nm)/LiF (1 nm)/Al (100 nm) [6]
Colour Red red
Max. Luminance 60,138 cd/m2
Max. EQE 23.7
Max. Current Efficiency 28.6 cd/A
Max. Power Efficiency 24.2 lm W1
Device structure ITO/NPB/anthracene/TPBI:11% Irppy3:0.5% Ir(piq)2(acac)/Mg:Ag [7]
Colour White white
Max. Luminance 6,398 cd/m2
Max. Current Efficiency 6.4 cd/A
Device structure  ITO/MoO3(1nm)/CBP(20nm)/CBP:Ir(piq)2(acac) (3 wt.%,4 nm)/CBP: Ir(DMP)3(5 wt.%,4 nm)/CBP:Ir(ppy)2(acac)(7 wt.%,5 nm)/CBP(3 nm)/Bepp2:BCzVBi(50wt.%,40nm)/Bepp2(20nm)/LiF(1nm)/Al(100nm) [8]
Colour White white
Max. Current Efficiency 26.4 cd/A
Max. Power Efficiency 24.8 lm W1
Device structure ITO/NPB/CBP:3 wt%TBPe:1 wt%rubrene/Zn(BTZ)2:5 wt% Ir(piq)2(acac)/Zn(BTZ)2/Mg:Ag [9]
Colour White white
Max. EQE 2.4%
Max. Luminance 23,000 cd/m2

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

Characterisation

1H NMR Ir(piq)2(acac)
1H NMR of bis(1-phenylisoquinoline)(acetylacetonate)iridium, Ir(piq)2(acac) in in CDCl3
HPLC Ir(piq)2(acac)
HPLC trace of Bis(1-phenylisoquinoline)(acetylacetonate)iridium(III), (piq)2Ir(acac)

Pricing

Grade Order Code Quantity Price
Unsublimed (>99.0% purity) M672 250 mg £227.00
Sublimed (>99.5% purity) M671 250 mg £390.00

MSDS Documentation

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

Literature and Reviews

  1. Multilayer organic electrophosphorescent white light-emitting diodes without exciton-blocking layer,
    G. Lei et al., Appl. Phys. Lett. 88, 103508 (2006); http://dx.doi.org/10.1063/1.2185255.
  2. Yellow and Red Electrophosphors Based on Linkage Isomers of Phenylisoquinolinyliridium Complexes: Distinct Differences in Photophysical and Electroluminescence Properties, C-L. Li et al.,  Adv. Funct. Mater. 15, 387-395 (2005); DOI: 10.1002/adfm.200305100.
  3. High-efficiency electrophosphorescent white organic light-emitting devices with a double-doped emissive layer, W. Xie et al., Semicond. Sci. Technol. 20, 326–329 (2005); doi:10.1088/0268-1242/20/3/013.
  4. Improved color stability in white phosphorescent organic light-emitting diodes using charge confining structure without interlayer, S-H. Kim et al., Appl. Phys. Lett. 91, 123509 (2007); http://dx.doi.org/10.1063/1.2786853.
  5. A white organic light-emitting diode with ultra-high color rendering index, high efficiency, and extremely low efficiency roll-off, N. Sun et al., Appl. Phys. Lett. 105, 013303 (2014); http://dx.doi.org/10.1063/1.4890217.
  6. Host and Dopant Materials for Idealized Deep-Red Organic Electrophosphorescence Devices, C-H. Fan et al., Adv. Mater., 23, 2981–2985 (2011); DOI: 10.1002/adma.201100610.
  7. Full-Wavelength White Organic Light Emitting Diodes with Blue Fluorescence and Phosphorescent Iridium Complexes, J. Li et al., J. Electrochem. Soc. 2006 volume 153, issue 11, H195-H197; doi: 10.1149/1.2335968
  8. A multi-zoned white organic light-emitting diode with high CRI and low color temperature,  T. Zhang et al., Sci. Reports, 6:20517; DOI: 10.1038/srep20517.
  9. Influence of Dopant Concentration on Electroluminescent Performance of Organic White-Light-Emitting Device with Double-Emissive-Layered Structure, M. Wu et al., Chin. Phys. Lett., 25, 294-297 (2008).

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.