A bridging monomer with terpyridine moieties at both ends of the insulated conjugated chain was successfully synthesized. The synthesis necessitated a new strategy, in which Fe-II was employed as a removable water-solubilizing substituent. The monomer was able to coordinate with Fe-II, Co-II, Ni-II, or Ru-II to give highly insulated conjugated metallopolymers. The high coverage insulation suppressed the recombination of charge carriers relative to an uninsulated reference and provided higher charge mobility along the chain than the less insulated metallopolymer.