Toward the development of molecular wires: A terpyridine spacer containing polyferrocenylalkyne linkages

The preparation, characterizations, and electrochemical measurements of the terpyridine-ferrocenylalkyne spacers (tpy-C C-(fc)(n)-C C-tpy; tpy = terpyridyl; fc = ferrocenyl; n = 2, 3) are described. In the electrochemical measurements, the charge could be delocalized to the cyclopentadienyl and ethynyl moieties caused by the built-up charge density upon oxidation of the ferrocenyl moiety.