Branched 1,2,3-Triazolium-Functionalized Polyacetylene with Enhanced Conductivity

Abstract

Metathesis cyclopolymerization of mono- or bissubstituted 1,6-heptadiynes is undergone to generate the ionic polyacetylenes (iPAs) with branched 1,2,3-ttriazolium pendants, which possess relatively high intrinsic ionic conductivities of 1.4 × 10^-5 -2.1 × 10^-5 S cm^-1 at 30 °C. The doping treatment with lithium bis(trifluoromethanesulfonyl)imide endows iPAs with enhanced ionic conductivities of 2.5 × 10^-5 -4.3 × 10^-5 S cm^-1 . Further doping with iodine, iPAs show ionic and electronic dual conductivities of 4.5 × 10^-5 -7.1 × 10^-4 and 1.5 × 10^-6 -4.5 × 10^-6 S cm^-1 , respectively. Therefore, the doped iPAs demonstrate the potential in the area of conducting polymers and polymeric electronics.