Atomic design of π-conjugated metal complex oligomers and polymers

摘要

As a model to understand electronic communication between transition metal centres in π-conjugated metal complex polymers, redox properties of soluble oligo(1,1'-ferrocenylene)s were investigated. The dependence of redox potentials on the number of redox nuclei can be explained using not only the neighboring site interaction energies, U_(OR), U_(OO) and U_(RR), but also the second neighbouring site interaction energy, U_(OXR). IR-spectroelectrochemistry of the (cyclopentadiene) Fe(CO)_3-attached ferrocene, biferrocene and terferrocene has proved the theoretical prediction on the thermodynamically favorable forms of electronic isomers in the mixed valence states based on the neighboring site interaction energy.