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

Abstract

In this paper, 8-hydroxyquinoline aluminum/polypyrrole (Alq₃/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, Alq3 and Alq3/PPy composites have been studied by X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy and thermogravimetric analysis. The electrical conductivities of Alq₃/PPy composites were evaluated using ohmmeter. It is found that the Alq3/PPy composites are successfully synthesized via in situ oxidative polymerization. The results of thermogravimetric analysis showed that relatively good thermal stability of Alq₃/PPy composites. Furthermore, the probable formation mechanism of Alq₃/PPy core-shell structure composites was also proposed on the basis of the experimental results.