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Product Code M2231A1
Price $300.00 ex. VAT

Ir(dpm)PQ2, orange to red phosphorescent emitter

High-purity (>99.0%) and available online for priority dispatch

Bis(2-phenylquinoline)(2,2,6,6-tetramethylheptane-3,5-dionate)iridium(III) - Ir(dpm)PQ2, also known as Ir(PQ)2(tmd) is an orange to red phosphorescent emitter. The ligand 2,2,6,6-tetramethylheptane-3,5-dionate corrdinated to the iridium centre is sterically hindered with two bulky tert-butyl groups at both ends.

Ir(dpm)PQ2 is often either used in pure red as a single emitting layer material or in white emitting highly efficient OLED devices for its low lying triplet energy state and greater stability, preventing triplet-triplet annihilation thus leading to higher device efficiencies.

General Information

CAS number 713079-03-9
Full name Bis(2-phenylquinoline)(2,2,6,6-tetramethylheptane-3,5-dionate)iridium(III)
Chemical formula C41H39N2O2Ir
Molecular weight 783.98 g/mol
Absorption* λmax 333 nm in DCM
Fluorescence λem 595 nm in DCM
HOMO/LUMO HOMO 5.10 eV, LUMO 3.10 eV [1]
Synonyms PQ2Ir(dpm), PQ2Ir, Ir(PQ)2(tmd), Bis[2-(2-quinolinyl)phenyl](2,2,6,6-tetramethyl-3,5-heptanedionato)iridium
Classification / Family Iridium Complex, Organic electronics, TADF-OLEDs, Orange to red phosphorescent dopant materials, Sublimed materials.

* Measurable with an optical spectrometer, see our spectrometer application notes.

Product Details

Purity Sublimed* >99.0% (HPLC)
Melting point TGA >290 °C (0.5% weight loss)
Appearance 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(dpm)PQ2 (CAS 713079-03-9)
Chemical structure of Ir(dpm)PQ2, CAS No. 713079-03-9

Device Structure(s)

Device structure ITO/HATCN (5 nm)/NPB (40 nm)/TCTA (5 nm)/BBPI (6 nm)/CBP (3 nm)/CBP:8 wt% Ir(PPy)3 (10 nm)/CBP (3 nm)/BBPI:1.0 wt% PQ2Ir (8 nm)/TPBi (40 nm)/LiF (1 nm)/Al [1]
Colour White white light emitting device
Max Current Efficiency 71.4 cd/A 
Max EQE 33.5%
Max. Power Efficiency 61.5 lm W-1
Device structure ITO (130 nm)/TAPC (40 nm)/TCTA (5 nm)/PQ2Ir(dpm) 2 wt % doped CBP (1 nm)/Ir(ppy)3 6 wt % doped CBP (1 nm)/Ir(dbfmi)* 10 wt % doped PO9 (10 nm)/B3PyPB (50 nm)/LiF (0.5 nm)/Al (100 nm) [2]
Colour White white light emitting device
Max. Current Efficiency 53.7 cd/A 
Max. EQE 23.3%
Max. Power Efficiency 55.2 lm W-1
Device structure ITO/HATCN (10 nm)/NPB (30 nm)/HTM (10 nm)/6 wt% PQ2Ir:BCzPh:SF2-TRZ (25 nm)/T2T (10 nm)/NBPhen (40 nm)/LiF (1 nm)/Al (100 nm), [3]
Colour Red red light emitting device
Max. Current Efficiency 33.6 cd/A 
Max. EQE 19.8%
*For chemical structure information, please refer to the cited references.

MSDS Documentation

Ir(dpm)PQ2 MSDSIr(dpm)PQ2 MSDS sheet


Grade Order Code Quantity Price
Sublimed (>99.0% purity) M2231A1 100 mg £240
Sublimed (>99.0% purity) M2231A1 250 mg £480
Sublimed (>99.0% purity) M2231A1 500 mg £850
Sublimed (>99.0% purity) M2231A1 1 g £1450

Literature and Reviews

  1. Highly efficient single- and multi-emission-layer fluorescent/phosphorescent hybrid white organic light-emitting diodes with ~20% external quantum efficiency, X. Li et al., J. Mater. Chem. C, 3, 9233 (2015); DOI: 10.1039/c5tc02050f.
  2. High-Efficiency Blue and White Organic Light-Emitting Devices Incorporating a Blue Iridium Carbene Complex, H. Sasabe et al., Adv. Mater., 22, 5003–5007 (2010); DOI: 10.1002/adma.201002254.
  3. Predicting Operational Stability for Organic Light-Emitting Diodes with Exciplex Cohosts, Z. Wang et al., Adv. Sci., 6, 1802246 (2019); DOI: 10.1002/advs.201802246.

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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