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Chain-Shuttling Polymerization at Two Different Scandium Sites: Regio- and Stereospecific “One-Pot” Block Copolymerization of Styrene, Isoprene, and Butadiene

Authors

  • Li Pan,

    1. Organometallic Chemistry Laboratory and Advanced Catalyst Research Team, RIKEN Advanced Science Institute, 2-1 Hirosawa, Wako, Saitama 351-0198 (Japan)
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  • Dr. Kunyu Zhang,

    1. Organometallic Chemistry Laboratory and Advanced Catalyst Research Team, RIKEN Advanced Science Institute, 2-1 Hirosawa, Wako, Saitama 351-0198 (Japan)
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  • Dr. Masayoshi Nishiura,

    1. Organometallic Chemistry Laboratory and Advanced Catalyst Research Team, RIKEN Advanced Science Institute, 2-1 Hirosawa, Wako, Saitama 351-0198 (Japan)
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  • Prof. Dr. Zhaomin Hou

    Corresponding author
    1. Organometallic Chemistry Laboratory and Advanced Catalyst Research Team, RIKEN Advanced Science Institute, 2-1 Hirosawa, Wako, Saitama 351-0198 (Japan)
    • Organometallic Chemistry Laboratory and Advanced Catalyst Research Team, RIKEN Advanced Science Institute, 2-1 Hirosawa, Wako, Saitama 351-0198 (Japan)
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  • This work was supported by a Grant-in-Aid for Scientific Research (S) (No. 21225004) from Japan Society for the Promotion of Science.

Abstract

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Block an Block: Die Copolymerisation von Styrol und Isopren durch die Katalysatoren Sc1 (syndiospezifisch für Styrol) und Sc2 (cis-1,4-spezifisch für Isopren) mit dem Kettenüberträger iBu3Al ergibt Blockcopolymere von syndiotaktischem Polystyrol (sPs) und cis-1,4-Polyisopren (PIP). Ersetzen von Sc2 durch Sc3 (hohe 3,4-Selektivität für die Isoprenpolymerisation) liefert selektiv Copolymere mit sPS- und 3,4-PIP-Blöcken.

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