
8-Hydroxyquinoline aluminum salt (tris(8-hydroxyquinolinato)aluminum, Alq3) is a metal chelate complex appearing as a yellow crystalline powder with a melting point above 300℃. It is a classic electron transport and light-emitting material in organic light-emitting diodes (OLEDs), valued for its excellent thermal stability, film-forming ability and high fluorescence quantum yield. in water. In acidic solutions, it is colorless, while in basic solutions, it turns pink to purple.