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Sigma-Aldrich

Tris-(8-hydroxyquinoline)aluminum

sublimed grade, 99.995% trace metals basis

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Synonym(s):
8-Hydroxyquinoline aluminum salt, Alq3, Aluminum 8-hydroxyquinolinate, Aluminum oxinate, Tris-(8-hydroxyquinolinato)aluminum
Empirical Formula (Hill Notation):
C27H18AlN3O3
CAS Number:
2085-33-8
Molecular Weight:
459.43
EC Number:
218-227-0
MDL number:
MFCD00191693
PubChem Substance ID:
329761948
NACRES:
NA.23

grade

sublimed grade

Quality Level

100

Assay

99.995% trace metals basis

form

solid

loss

0.5 wt. % loss on heating, 332°C (typical, TGA)

mp

>300 °C (lit.)
411 °C (DSC)

λmax

259 nm

fluorescence

λex 390 nm; λem 519 nm

Orbital energy

HOMO 5.8 eV 
LUMO 3.1 eV 

OLED Device Performance

ITO/MoO3/NPD/Alq3/BPhen/LiF/Al

  • Color: green
  • Max. Luminance: 20000 Cd/m2
  • Max. EQE: 1.2 %
  • Turn-On Voltage: 2.8 V

ITO/NPD/CBP:Ir(ppy)3/BCP/Alq3/Mg:Al
  • Color: green
  • Max. Luminance: 100000 Cd/m2
  • Max. EQE: 8 %
  • Turn-On Voltage: 4.3 V

ITO/NPD/TCTA/BCPO:Ir(piq)3 (7-8%)/BCP/Alq3/LiF/Al
  • Color: red
  • Max. Luminance: 24529 Cd/m2
  • Max. EQE: 17 %
  • Turn-On Voltage: 2.7 V

ITO/NPD/TCTA/BCPO:Ir(ppy)3 (7-8%)/BCP/Alq3/LiF/Al
  • Color: green
  • Max. Luminance: 207839 Cd/m2
  • Max. EQE: 21.6 %
  • Turn-On Voltage: 2.1 V

ITO/m-MTDATA/NPD/TTPhPhB/Alq3/LiF/Al
  • Color: blue
  • Max. Luminance: 9100 Cd/m2
  • Max. EQE: 2.5 %
  • Turn-On Voltage: 3.2 V

SMILES string

O([Al](Oc1cccc2cccnc12)Oc3cccc4cccnc34)c5cccc6cccnc56

InChI

1S/3C9H7NO.Al/c3*11-8-5-1-3-7-4-2-6-10-9(7)8;/h3*1-6,11H;/q;;;+3/p-3

InChI key

TVIVIEFSHFOWTE-UHFFFAOYSA-K

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General description

Tris(8-hydroxyquinoline)aluminum(III)(Alq3) is a key green-light emitting and electron transport material for OLEDs. A study reports the new crystalline phase d besides its, originally known, three other crystalline phases, α,β,γ. It exhibits excellent chemical stability and high luminescence efficiencies.

Application

Thin films of tris(8-hydroxyquinoline) aluminum (Alq3) can be used for organic electroluminescent devices.
Key green-light emitting and electron transport material for OLEDs.

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H315 - H319 - H335

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Electronic structure of tris (8-hydroxyquinoline) aluminum thin films in the pristine and reduced states.
Johansson J, et al.
J. Chem. Phys. , 1 null
Molecular Orbital Study of the First Excited State of the OLED Material Tris(8-hydroxyquinoline)aluminum(III)
Halls MD and Schlegel HB
Chemistry of Materials null
Preparation and characterization of blue luminescent tris (8-hydroxyquinoline ) alumunium (Alq3)
Colle M, et al.
Advances in Functional Materials null
Molecular Orbital Study of the First Excited State of the OLED Material Tris(8-hydroxyquinoline)aluminum(III)
Halls MD and Schlegel HB
Chemistry of Materials, 2632-2640 null
Preparation and characterization of blue luminescent tris (8-hydroxyquinoline ) alumunium (Alq3)
Colle M, et al.
Advances in Functional Materials null
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