8hydroxyquinolinate

8hydroxyquinolinate refers to the anion derived from 8-hydroxyquinoline, also known as oxine. 8-hydroxyquinoline is a chelating agent, meaning it can form stable complexes with various metal ions. When 8-hydroxyquinoline loses a proton from its hydroxyl group, it forms the 8hydroxyquinolinate anion, which is the active species in these complex formation reactions. These complexes, often referred to as metal oxinates, have a variety of applications due to their unique properties.

Metal 8hydroxyquinolinate complexes exhibit fluorescence, which has led to their use in analytical chemistry for the detection and quantification of metal ions. They are also employed in gravimetric analysis, where the insoluble metal oxinate precipitates out and can be weighed. In material science, some metal oxinates, such as aluminum tris(8-hydroxyquinolinate) (Alq3), are important components in organic light-emitting diodes (OLEDs) due to their electroluminescent properties. Furthermore, 8hydroxyquinoline and its derivatives have been investigated for potential antimicrobial and antifungal activities, though the precise role of the 8hydroxyquinolinate anion in these biological effects is a subject of ongoing research. The stability and specific properties of the metal oxinate complexes depend heavily on the particular metal ion involved and the reaction conditions.