Redox center interacts with polymer backbone

The electronic interaction between pendant ferrocenyl groups and a polythiophene backbone was probed via polymer films prepared from monomer 71 (Chart 5.21) [61, 62], These films show maximum conductivity at the ferrocenyl redox potential. Copolymers of 4-n-hexylcyclopentadithiophene and 71 were prepared with various ratios of the two components and the measured conductivity of these copolymers shows that electron exchange between the ferrocenyl groups and the polymer backbone is efficient. Azaferrocene-functionalized polymers have been prepared by electropolymerization of monomers 72a-d, in which the metal is bound in a K fashion to the backbone. Electrochemical and conductivity measurements revealed that the iron-centered... 

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