Poly(anthryacetylenes) bearing oligooxyethylene units were synthesized from 10-ethynyl-9-[3,6-dioxaheptyl]oxycarbonylanthracene (1) and 10-ethynyl-9-[3,6,9,12-tetraoxatridecyl]oxycarbonyl-anthracene (2) by using a transition metal catalyst, WCl6, in 30% and 34% yields, respectively. Both of the polymers were black solids and soluble in chloroform, tetrahydrofuran, acetone, etc., but insoluble in alcohols, aliphatic hydrocarbons, etc. The UV-vis spectra of the polymers showed absorption maxima and band edges at around 570 and 750 nm, respectively, indicating that the polymer chains possess highly extended conjugation. These polymers exhibited blue emission (emission maxima approximate to470 nm) upon photoexcitation at 380 nm. Poly(2) showed a fairly large ionic conductivity (4.1 x 10(-5) S/cm) at 80 degreesC upon doping with Li(CF3SO2)(2)N.