Abstract
To each his own: Copolymerization of styrene and isoprene by catalysts Sc1 (syndiospecific for styrene) and Sc2 (cis-1,4-specific for isoprene) with a chain-shuttling agent iBu3Al gives block copolymers of syndiotactic polystyrene (sPS) and cis-1,4-polyisoprene (PIP). Replacement of Sc2 with Sc3 (high 3,4-selectivity for isoprene polymerization) gives selectively copolymers having sPS and 3,4-PIP blocks. Detailed facts of importance to specialist readers are published as ”Supporting Information”. Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.
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