Abstract
Poly(2-methyl-5-vinylpyridine) is sulfurized with elemental sulfur at 140—320 °C to release hydrogen sulfide and to give black lustrous powders (sulfur content up to 45%) possessing electric conductivity (6.4·10–11—1.6·10–7 S cm–1), paramagnetism (spin concentration 6.2·1018—5.0·1019 sp g–1, g = 2.0043—2.0046, ΔH = 0.49—0.58 mT), and redox and complex-forming properties. Elemental analysis data, IR, ESR, and mass spectra, DSC and TGA data, electric conductivity, electrochemical activity and chemical properties (salt formation and complexation) of the materials synthesized correspond to cross-liked poly(6-methyl-5-sulfanylthieno[2,3-b]pyridine-4-thione), poly(thieno[2,3-b]azepine-4,5(6H)-dithione), and related structures.
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Trofimov, B.A., Mal"kina, A.G., Sokolyanskaya, L.V. et al. Sulfurization of polymers. 5. Poly(6-methyl-5-sulfanylthieno[2,3-b]pyridine-4-thione), poly(thieno[2,3-b]azepine-4,5(6H)-dithione), and related structures from poly(2-methyl-5-vinylpyridine) and elemental sulfur. Russian Chemical Bulletin 51, 282–289 (2002). https://doi.org/10.1023/A:1015455610469
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DOI: https://doi.org/10.1023/A:1015455610469