Studies on novel functional b-cyclodextrin and its metal complexes

A novel partly substituted dithiocarboxyl b-cyclodextrin and its metal complexes (Cu2þ, Co2 þ and Ni2þ) were synthesized and characterized by means of IR, UV, 1H NMR, MS, electron spin resonance, cyclic voltammetry and transmission electron microscope. The results indicate that some hydroxyls of C2 of anhydroglucose unit have been modified by carbon disulphide and the functional b-cyclodextrin complexes show properties of both metal and cyclodextrin. The novel functional material made by the partly substituted b-cyclodextrin exhibits stable electrochemical activity and paramagnetism. q 2004 Elsevier B.V. All rights reserved.