New approach to synthesis Zinc(II)-(8-hydroxyquinoline) complex and its luminescent property

In this work, air-flow impacting reaction as a new approach was utilized to synthesis zinc(II)-(8-hydroxyquinoline) complex for the first time. Pure ZnQ2∙2H2O and (ZnQ2)4 powders also can be obtained by washing with chloroform and further heating over 180 °C, respectively. The structure, morphology, UV–vis absorption and photoluminescent of the zinc complexes were analyzed, which proves the remarkable luminescent property of the product prepared by this new approach. Especially, the product (ZnQ2)4 not only has up to 546 nm of emission, but also is endowed with 65.18% of the quantum yield. Moreover, air-flow impacting reaction is born with the advantage of large-scale preparation, which may extend the potential application of this new approach in synthesis of metal-ligand optical materials.