Cyclodextrins (CDs) are cyclic oligomers of alpha-1,4 linked D-glucopyranose. The main feature of CDs is an hydrophobic cavity which renders these molecules unusual. By appropriate functionalization new systems can be obtained and the features of these molecules can be increased and modulated. Among the various applications the building of molecular receptors and enzyme models by cyclodextrins is a particularly fascinating field. The present review will be a survey of the metal complexing properties of CDs and a report on some recent results of metal complexes formed by functionalized cyclodextrins. The metal ion can assist the host-guest interaction often increasing the properties of CDs to act as chiral receptors. Furthermore it can act as catalytic center in the mimicking of some metallo-enzyme models by functionalized cyclodextrins. (C) 1999 Elsevier Science S.A. All rights reserved.
|Titolo:||Metal complexes of functionalized cyclodextrins as enzyme models and chiral receptors|
|Data di pubblicazione:||1999|
|Appare nelle tipologie:||1.1 Articolo in rivista|