Preparation and Characterization of Conjugated Polypseudorotaxane Poly(Pyrrole/α-Cyclodextrin)

Abstract

Conjugated polypseudorotaxane polypyrrole/α-cyclodextrin (PPy/α-CD) was synthesized by chemical oxidative polymerization of pyrrole in the presence of α-CD. The FT-IR spectra and wide-angle X-ray diffraction (WAXD) pattern showed that the pyrrole-CD (Py-CD) rotaxanes were presented in the polypyrrole (PPy) chains. The polypseudorotaxane wires composed of α-CD as the insulating cover and polypyrrole as the core were expected product in this study. The elemental analysis suggests that the molar ratio of α-CD to pyrrole is 1:5. Because of the discontinuous presence of Py-CD rotaxanes, the conductive behavior morphology and thermal stability of the polypseudorotaxanes are greatly different than those of the pure PPy. Moreover, this work analyzed the reaction mechanism in the microscopic view.

Keywords:

• Conjugate
• α-Cyclodextrin
• Polypseudorotaxane
• Polypyrrole
• Supramolecular