Abstract
Abstract We report the infrared spectra of “trans”-polyacetylene that has been thermally prepared from c/s-(CH)x. The minimum of 5-7 percent residual 740 cm−1 absorption observed for all cases studied is suggested to be due to isolated remnant c/s linkages. It is shown that these remnant cis linkages may confine the neutral soliton and hence affect the neutral soliton diffusion coefficient. Implications for the soliton generation mechanisms and for conjugation lengths derived from Raman spectra are pointed out.
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