Tris-(8-hydroxyquinoline) aluminum – Sigma-Aldrich

Synonyms
8-Hydroxyquinoline aluminum salt, Alq3, Aluminum 8-hydroxyquinolinate, Aluminum oxinate, Tris-(8-hydroxyquinolinato)aluminum

Cas No.
2085-33-8

General description
Alq3 crystals exist in two isomeric states, meridional and facial isomers. A third isomeric state ( γ) was studied by X-ray diffraction, the δ-Alq3 transforms into γ-form at ~180°C.  Mechanism of the Alq3 phosphorescence has been studied.

Application
Key green-light emitting and electron transport material for OLEDs.