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General information

  • Name: Ir(dpm)PQ2
  • Full name: Bis(2-phenylquinoline)(2,2,6,6-tetramethylheptane-3,5-dionate)iridium(III)
  • CAS number: 713079-03-9
  • Chemical formula: C41H39N2O2Ir
  • Molecular weight: 783.98 g/mol
  • Absorption: λmax = 333 nm in DCM
  • Photoluminescence: λmax = 595 nm in DCM
  • HOMO/LUMO: HOMO = 5.1 eV, LUMO = 3.1 eV
  • Synonyms: PQ2Ir(dpm), PQ2Ir, Ir(PQ)2(tmd), Bis[2-(2-quinolinyl)phenyl](2,2,6,6-tetramethyl-3,5-heptanedionato)iridium
  • Classification: Organic light-emitting diodes, Emmiting layer materials (EML), TADF materials, Orange to red phosphorescent dopant materials
  • Purity: Sublimed: >99%
  • Melting point: TGA: >290 °C
  • Appearance: Red powder/crystals

Ir(dpm)PQ2: The Synthesis of Stability and Efficiency in OLEDs

In the dynamic world of organic light-emitting diodes (OLEDs), Ir(dpm)PQ2 emerges as a pivotal material, driving advancements with its exceptional luminescent qualities. Known fully as Bis(2-phenylquinoline)(2,2,6,6-tetramethylheptane-3,5-dionate)iridium(III), this compound is not just a component; it’s a cornerstone in the fabrication of high-efficiency OLEDs.

Understanding Ir(dpm)PQ2

Ir(dpm)PQ2 is a specialized organometallic complex utilized predominantly in OLED technology. It is a phosphorescent emitter. Its molecular architecture is engineered to emit light in the orange to red spectrum, with a peak emission at approximately 595 nm, which is integral for creating vivid and dynamic display colors.

Key Features of Ir(dpm)PQ2

  • High Photoluminescence Quantum Yield: Ensures bright emission, contributing to the vividness of the display.
  • Thermal Stability: Maintains performance over a wide range of operating temperatures, ensuring longevity.
  • Efficient Energy Transfer: Optimizes the transfer of energy to the emissive layer, enhancing overall device efficiency.
  • Versatile Emission Layer: Can be used as a standalone emitter or as part of a multi-component system for diverse color rendering.
  • Triplet-Triplet Annihilation Prevention: Its molecular structure is designed to minimize energy losses through triplet-triplet annihilation, a key factor in maintaining high efficiency in OLED devices.

The Role of Ir(dpm)PQ2 in OLED Innovation

The strategic incorporation of Ir(dpm)PQ2 into OLEDs signifies a leap forward in device performance. Its role extends from providing pure red emission to enhancing the white balance in multi-colored OLED displays, marking it as a versatile and indispensable material in the industry.


Ir(dpm)PQ2 stands at the forefront of OLED materials, embodying the innovative spirit of organic electronics. Its multifunctional role and high-performance attributes solidify its position as an essential element in the evolution of OLED technology, paving the way for devices that are not only more efficient but also offer enhanced visual experiences.

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