Highly-controlled regiospecific free-radical copolymerization of 1,3-diene monomers with sulfur dioxide |
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Authors: | Tanaka Naruki Sato Eriko Matsumoto Akikazu |
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Affiliation: | Department of Applied Chemistry and Bioengineering, Graduate School of Engineering, Osaka City University, Sumiyoshi-ku, Osaka, Japan. |
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Abstract: | The free-radical copolymerization of alkyl-substituted 1,3-butadienes with sulfur dioxide using a redox initiating system in toluene at -78 °C produced poly(diene sulfone)s consisting of a highly alternating and 1,4-regiospecific repeating structure, irrespective of the position and number of alkyl substituents, and the highly regioselective propagation via a free radical reaction mechanism is well accounted for by DFT calculations using model reactions. |
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