Bis(terpyridine)-iron(II) complex wires (the number of the complex units: 1-3) possessing triarylamine at the termini were fabricated on gold electrode. The electron-transfer rate constant between the triarylamine moiety and gold electrode was quantified by means of potential-step chronoamperometry, revealing that (1) triarylamine afforded fast electron transportation (i.e., large zero-distance rate constant k(et)(0)) and that (2) the distance attenuation factor, beta(d), was independent of the terminal redox site.