Polymers ferrocene conjugates

In the characterization of electropolymerization products from ferrocene/thiophene conjugates, however, it was shown that they are relatively unstable to repeated potential cycling between 0.0 and +1.0 V and are quickly destroyed at potentials of + 2.0 V or more. The system appears to have an intrinsic limit to the amount of polymer that may be deposited onto the electrode surface. This may be rationalized to arise from the cationic state of ferrocenium when the oxidation potential of thiophene monomer is reached. Surface coverage calculations show that this limit corresponds to about a monolayer of ferrocene groups. 

Proton-Coupled Intramolecular Electron Transfer in Ferrocene-Quinone Conjugated Oligomers and Polymers... 

At this point, then, our response to the question posed at the beginning of this section will be clearly affirmative polymer conjugation of the inherently inactive ferrocene indeed represents an efficacious means to achieve significant cytotoxic activity, at least in in vitro systems, and this effect manifests itself even with the... 

---