337526-85-9

Basic information

• Product Name: Acetylacetonatobis(2-phenylpyridine)iridium
• Synonyms: (ppy)2Ir(acac);Bis(2-phenylpyridine)(acetylacetonate)iridiuM(III)/ Ir(ppy)2(acac);IridiuM(III) bis(2-phenylpyridinato-N,C2') (acetylacetonate);Bis(2-phenylpyridine-C2,N')(acetylacetonato)IridiuM (III);Bis[2-(2-pyridinyl-N)phenyl-C](acetylacetonato)iridiuM(III);Bis[2-(2-pyridinyl-N)phenyl-C](2,4-pentanedionato-O2,O4)iridium(III);Bis(2-phenylpyridine)(acetylacetonate)iridium;Ir(ppy)2(acac)
• CAS NO: 337526-85-9
• Molecular Formula: C₂₇H₂₃IrN₂O₂
• Molecular Weight: 599.711
• EINECS: 1312995-182-4
• Product Categories: oled materials;fine chemicals, specialty chemicals, intermediates, electronic chemical, organic synthesis, functional materials
• Mol File: 337526-85-9.mol
• Article Data: 1

Chemical Properties

• Melting Point: 349-356°C
• Appearance: /
• CAS DataBase Reference: Acetylacetonatobis(2-phenylpyridine)iridium(CAS DataBase Reference)
• NIST Chemistry Reference: Acetylacetonatobis(2-phenylpyridine)iridium(337526-85-9)
• EPA Substance Registry System: Acetylacetonatobis(2-phenylpyridine)iridium(337526-85-9)

Safety Data

• Hazard Codes: Xi
• Statements: 36/37/38
• Safety Statements: 26
• WGK Germany: 3
• Hazardous Substances Data: 337526-85-9(Hazardous Substances Data)

Usage

Applications

Like Ir(ppy)3, bis[2-(2-pyridinyl-N)phenyl-C](acetylacetonato)iridium(III), or Ir(ppy)2(acac), is one of the most studied OLED materials due to its high quantum yields. When doped into 3,5-Diphenyl-4-(1-naphthyl)-1H-1,2,4-triazole (TAZ), very high external quantum efficiencies of (19.06 ± 1.0%) and luminous power efficiencies of 60±5 lm/W were achieved. This was attributed to the nearly 100% internal phosphorescence efficiency of Ir(ppy)2(acac), coupled with balanced hole and electron injection, and triplet exciton confinement within the light-emitting layer. Ir(ppy)2(acac) demonstrated higher external quantum efficiency when compared with Ir(ppy)3. It was suggested that Ir(ppy)2(acac) molecules preferentially align so that their transition dipole moment is parallel to the substrate, whereas the orientation of Ir(ppy)3 molecules is nearly isotropic.

Description

Like?Ir(ppy)3, bis[2-(2-pyridinyl-N)phenyl-C](acetylacetonato)iridium(III), or?Ir(ppy)2(acac), is one of the most studied OLED materials due to its high quantum yields. When doped into 3,5-Diphenyl-4-(1-naphthyl)-1H-1,2,4-triazole (TAZ), very high external quantum efficiencies of (19.06 ± 1.0%) and luminous power efficiencies of 60±5 lm/W were achieved. This was attributed to the nearly 100% internal phosphorescence efficiency of Ir(ppy)2(acac), coupled with balanced hole and electron injection, and triplet exciton confinement within the light-emitting layer.

Uses

(ppy)2Ir(acac) used in green phosphorescent OLED devices as dopant/emitter achieved high brightness of 130800 cd m_2 at a current density of 1550 mA cm_2 (13 V), and high quantum efficiency (15~16%).

Relevant articles and documents

A kinetic resolution strategy for the synthesis of chiral octahedral NHC-iridium(iii) catalysts

The transmetalation reaction of a chiral-bidentate NHC-silver complex to racemic [Ir(μ-Cl)(ppy)2]2 operates with kinetic resolution leading to chiral octahedral NHC-iridium(iii) complexes and enantio-enriched bis-cyclometalated iridium(iii) complexes. The iridium(iii) complexes demonstrated efficient catalytic activities in intermolecular [2+2] photocycloaddition reactions and in asymmetric Friedel-Crafts alkylations, respectively.