Preparation of β-cyclodextrin–polyaniline complex in supercritical CO2

A method is proposed to prepare β-cyclodextrin (β-CD)/polyaniline (PANI) inclusion complex. In this route, benzoyl peroxide (BPO, the oxidant) is first encapsulated into the cavity of β-CD. Aniline is then carried into the cavity of β-CD by supercritical (SC) CO2, which polymerizes in situ to form inclusion complex. The product is characterized by FT-IR, UV–Vis, 1H NMR and XRD techniques. The results suggest that the columnar inclusion complexes may be formed.