Ir(dpm)PQ2

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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*	λ_max 333 nm in DCM
Fluorescene	λ_em 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

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
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
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
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 MSDS sheet

Pricing

Grade	Order Code	Quantity	Price
Sublimed (>99.0% purity)	M2231A1	100 mg	£200.00
Sublimed (>99.0% purity)	M2231A1	250 mg	£400.00
Sublimed (>99.0% purity)	M2231A1	500 mg	£700.00
Sublimed (>99.0% purity)	M2231A1	1 g	£1200.00

Literature and Reviews

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.
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.
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.