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

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. (Figure presented.).