INTERACTION BETWEEN FULLERENE (C60) AND LONG-CHAIN N-ALKYLAMINO SUBSTITUTED CYCLODEXTRINES

The structures and the molecular motions of gamma-cyclodextrins substituted by eight alkylamino groups (NHC16H33 and NHC6H13) were studied by H-1 and C-13 NMR spectroscopy. It was found the behavior of the cyclodextrin moiety was different from that of the N-alkyl chains. The H-1 NMR spectrum of the C60 and N-alkyl cyclodextrin mixed in organic solvents was completely different from that of N-alkyl cyclodextrin alone. These results indicate that these cyclodextrin derivatives strongly interact with C60 molecules. The strong interaction between C60 and N-alkyl cyclodextrins may result from the formation of an inclusion complex between these molecules.