Ir(piq)2(acac)

Order Code: M672
MSDS sheet

Price

(excluding Taxes)

£127.00


Pricing

 Grade Order Code Quantity Price
Sublimed (>99.5% purity) M671 100 mg £159
Unsublimed (>99.5% purity) M672 250 mg £127
Sublimed (>99.5% purity) M671 250 mg £265

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, phosphorescence red dopant OLEDs, OLED and PLED materials, Sublimed materials

Product Details

Purity Sublimed* >99.5%
Melting point 366-370 °C (lit.)
Colour 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 that 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 tiopc ir(piq)2(acac)
Chemical Structure of Bis(1-phenylisoquinoline)(acetylacetonate)iridium(III), Ir(piq)2(acac) CAS No. 435294-03-4; Chemical Formula C35H27IrN2O2.

Applications

Bis(1-phenylisoquinoline)(acetylacetonate)iridium(III), Ir(piq)2(acac) is widely used as an efficient phosphorescent red emitter as a guest 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].

 
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.

 

Characterisations

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).

 

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).