Chemical Oxidative Polymerization of beta-Cyclodextrin/Aniline Inclusion Complex

摘要

A beta-cyclodextrin(beta-CD)/aniline inclusion complex has been synthesized in aqueous solution and characterized by FT-IR and ~1H-NMR spectroscopy,chemical analysis and thermogravimetric method.By elemental analysis and ~1H-NMR spectroscopy a complex with stoichiometry 1:1.95 and 1:1.8(beta-CD/aniline)respectively,is found.The complexed aniline was polymerized by chemical oxidative polymerization using ammonium peroxydisulfate in water(pH = 7)and 1M HC1 aqueous solution.In both cases,after an induction period,insoluble polyanilines(PANIs)are obtained,however,in water at pH = 7,a polypseudorotaxane architecture containing a beta-CD molecule to approx 14 aniline units has resulted.In acidic conditions,anilinium cation is highly hydrophilic and inclusion complex has a strong tendency to dissociate to free molecules and emeraldine salt of PANI,free of host molecules is synthesized.