Synthesis of a Novel ۲-Methyl-۸-Quinolinol Complex of Zn (II) and Its Use in Organic Light Emitting Diodes (OLEDs) Fabrication

A zinc complex, (Me-HQ-H) [ZnI₂(Me-HQ)], was synthesized via a straightforward reaction between ZnI₂ and ۲-methyl-۸-quinolinol (Me-HQ). The complex was characterized using multiple techniques, including elemental analysis (CHN),     FT-IR, ¹H and ¹³C NMR and UV–Vis spectroscopy, with its molecular structure confirmed through X-ray diffraction analysis. In the study of Organic Light Emitting Diodes (OLEDs), the zinc complex was employed as a dopant at two different concentrations to achieve green electroluminescence. Photoluminescence (PL), current-voltage (I-V), and electroluminescence (EL) evaluations were orchestrated, revealing that higher dopant levels led to charge trapping, which resulted in self-quenching and reduced efficiency. Green electroluminescence was observed at wavelengths of ۵۱۷ nm and ۵۳۹ nm from devices ۲ and ۳, respectively.

کلیدواژه ها:

Zn (II) complex ، Luminescence ، ۲-methyl-۸-hydroxyquinoline ، OLED