Ferrocene end-capped dendrimer: synthesis and application to CO gas sensor

Dendritic carbosilane with ferrocenyl groups on the periphery was prepared. The dendrimer containing 48 Si-Cl bonds in the fourth generation was prepared by the use of iterative hydrosilation and alkenylation cycles. The title dendrimer was prepared by the reaction of 48 Si-Cl groups on the peripheral layer of the fourth generation with mono-lithiated ferrocene. The gas sensing abilities of the ferrocene end-capped dendrimer were measured by the use of a sensor device containing the spin-coated dendritic thin film that responded to the various concentrations of CO gas with the linear correlation. (C) 2001 Elsevier Science B.V. All rights reserved.