Abstract
Oligo(N-vinyl-4,5,6,7-tetrahydroindole-co-butyl vinyl ethers) have been synthesized through free-radical cooligomerization with a yield of 84%. The copolymers are readily soluble in organic solvents (benzene, 1,4-dioxane, chloroform, and tetrahydrofuran), stable up to 380–400°C, and paramagnetic. (The concentration of paramagnetic centers is 1014 spin/g.) In addition, the copolymers exhibit the properties of organic semiconductors. (After being doped with iodine, σ = 1.1 × 10−7 S/cm.) The analysis of the 1H and 13C NMR spectra has shown that the oligomerization reaction is complicated by intramolecular cyclization involving carbon atoms located at the 2-position of pyrrole rings.
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Original Russian Text © M.V. Markova, I.V. Tatarinova, L.V. Morozova, A.I. Mikhaleva, T.I. Vakul’skaya, S.S. Khutsishvili, G.F. Prozorova, B.A. Trofimov, 2013, published in Russian in Vysokomolekulyarnye Soedineniya, Ser. B, 2013, Vol. 55, No. 12, pp. 1497–1505.
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Markova, M.V., Tatarinova, I.V., Morozova, L.V. et al. Free-radical cooligomerization of N-vinyl-4,5,6,7-tetrahydroindole with butyl vinyl ether. Polym. Sci. Ser. B 55, 584–592 (2013). https://doi.org/10.1134/S1560090413120014
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DOI: https://doi.org/10.1134/S1560090413120014