Chemistry Reference
In-Depth Information
SCHEME 8.9
Synthesis of mixed ferrocene-cobaltocenium dendrimers
35-38
.
smaller size give rise to better packed films [113,114] more rigid and likely less
permeable, thus making the diffusion of glucose into the film more difficult. The
relays contained in more rigid films cannot achieve a close contact with the
enzyme redox centers, and therefore they are less efficient mediators. It was found
that the electrodeposited films of the smaller dendrimers exhibit a much higher
electrocatalytic activity in the reduction of the dissolved oxygen. This can be due to
the fact that the distance between organometallic centers becomes small enough that
cooperative effects can play a major role. The application of dendrimer-GOx-
modified electrodes allows the reduction of oxygen to hydrogen peroxide to occur
