Synthesis of Poly(Carbon Sulfide)s by Electroreductive Polymerization of Carbon Disulfide

We investigated the synthesis of poly(carbon sulfide) by electroreductive polymerization of CS2. For example, a polymer was obtained in 10% yield as a black solid consisting of both crystal and amorphous states by constant potential electrolytic reduction in acetonitrile solution of Bu4NBF4. Its electrical conductivity after doping with iodine was 1.7 × 10−2 S/m. By contrast, electrical conductivity of that prepared with Bu4NPF6 was 7.2 × 10−4 S/m. This difference is discussed by results of IR spectroscopic, elemental, XRD analyses. We investigated the synthesis of poly(carbon sulfide) by electroreductive polymerization of CS2. A polymer was obtained as a black solid consisting of both crystal and amorphous states by constant potential electrolytic reduction in acetonitrile solution of Bu4NBF4. By contrast, an amorphous black solid polymer was obtained with acetonitrile solution of Bu4NPF6.