Preparation and Characterization of 8-Hydroxyquinoline Aluminum/Polypyrrole Core-Shell Composites

In this paper, 8-hydroxyquinoline aluminum/polypyrrole (Alq(3)/PPy) core-shell composites were prepared via in situ chemical oxidative polymerization with ammonium persulfate (APS) as oxidizer and hydrochloric acid (HCl) as dopant. The structure and properties of PPy, Alq(3) and Alq(3)/PPy composites have been studied by X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy and thermogravimetric analysis. The electrical conductivity of Alq(3)/PPy composites were evaluated using ohmmeter. It is found that the Alq(3)/PPy composites is successfully synthesized via in situ oxidative polymerization. The results of thermogravimetric analysis showed that relatively good thermal stability of Alq(3)/PPy composites. Furthermore, the probable formation mechanism of Alq(3)/PPy core-shell structure composites were also proposed on the basis of the experimental results.