The nano-fiber structure and luminescence properties of 8-hydroxyquinoline metal-organic polymer

This study focuses on the fabrication and characterization of composite nanofibers incorporating metal-organic molecules through electrospinning. Initially, polyvinylpyrrolidone (PVP) and polyacrylonitrile (PAN) were dissolved in N, N-dimethylformamide (DMF) to formulate a spinning precursor solution. Electrospinning technology was then employed to fabricate nanofibers featuring uniform diameters and smooth surfaces. Subsequently, Znq2, Liq, and Alq3 molecules were introduced into the system, leading to the successful preparation of nanofibers within the metal-organic molecular composite system. The morphology and structure of the resultant composite nanofibers were characterized using field-emission environmental scanning electron microscopy (SEM) and X-ray energy dispersive spectroscopy (EDS). The analysis confirmed the uniform distribution of organic molecules on the nanofibers. Moreover, it showed that in the composite fiber system, Znq 2 , Alq 3 , and Liq can still maintain their excellent luminescent properties and achieve efficient synergy with the polymer matrix. The prepared fluorescent composite nanofibers exhibit significant advantages in green light emission and are expected to be widely applied in green light nanodevices such as light-emitting diodes and flat panel displays. It not only provides high-quality material options for the development of new optoelectronic devices but also opens up new technical ideas for the design and preparation of functional nanofiber materials.