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

Abstract

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.

A capacitive polypyrrole-wrapped carbon cloth/bacterial cellulose antibacterial dressing with electrical stimulation for infected wound healing

“…1c). The CC bers exhibited high thermal stability with minimal mass loss (< 0.2%) at 700℃, while PPy decomposition began at 100℃, leaving only 68.71% of its mass at 700℃, which is consistent with previous studies [33][34][35][36]. Therefore, the PPy content can be estimated by the mass loss of different samples at high temperature (700℃).…”

The study of optical and photodielectric properties of polymethyl methacrylate and tris‐(8‐hydroxy‐quinoline) aluminum (Alq3) composites

“…It can be concluded that the hopping charge mechanisms and matrix polarity are enhanced by the presence of Alq3. 33,[43][44][45] Also, charge transfer complexes formed due to presence of Alq3, which was confirmed by UV-vis spectra, increase the components of AC electrical conductivity and can contribute to the photoconductivity of these composites. [34][35][36] 2.5 | Photodielectric properties of composites PMMA/Alq3…”

“…The appearance of bands around 1331 and 1499 cm À1 , corresponding to the symmetric stretching vibration of CÀN bond and conjugate action of aromatic rings in the Alq3 molecule, are also clearly observed. 32,33…”