One-Step Synthesis of High Pure Tris(8-hydroxyquinoline)aluminum for Optics and Photonics.

A simple method of synthesis of high pure tris(8-hydroxyquinoline)aluminum (Alq 3 ) from commercial available 5N Al 2 O 3 and 8-hydroxyquinolinol has been developed. One-step exchange chemical reaction has been conducted under controlled 8-hydrixyquinoline vapor at a temperature of 190-240 °C with water removal by phosphorus anhydride. According to analysis of inductively coupled plasma mass-spectrometry, the chemical purity of synthesized Alq 3 was 99.998 wt%. Photoluminescence of the synthesized Alq 3 has been measured and slightly differed from those of Alq 3 obtained by traditional organic synthesis.