Author
Wilhelm Risse
Bio: Wilhelm Risse is an academic researcher from California Institute of Technology. The author has contributed to research in topics: End-group & Chain transfer. The author has an hindex of 2, co-authored 2 publications receiving 42 citations.
Papers
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TL;DR: A review of titanacyclobutane-initiated "living" olefin metathesis polymerization for the preparation of new polymer structures is given in this paper, where the same type of reaction was used to link preformed polymer blocks to give ABA-type triblock copolymers and graft Copolymers.
38 citations
7 citations
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TL;DR: A review of living ring-opening metathesis polymerization (ROMP) reactions can be found in this article, along with a discussion of state-of-the-art catalysts for use in living ROMP reactions as well as opportunities for the future.
1,244 citations
515 citations
TL;DR: In this article, the authors reviewed progress in this field in the 1980s with some emphasis on new (living) polymerization reactions and controlled polymer synthesis and highlighted specific developments in new initiators and new monomers.
358 citations
TL;DR: In this paper, a review of transformation reactions involving living and controlled/living polymerization methods is presented, including step-growth, conventional and controlled free radical, cationic, anionic, group transfer, activated monomer Ziegler-Natta and metathesis reactions.
314 citations
TL;DR: An overview of the methods developed for different types and generations of metathesis catalysts that are typically used in polymerizations is presented and a 'field guide' of functionalization methods highlighting the factors to be considered when choosing the most appropriate approach is presented.
Abstract: The precise placement of functional groups on the chain-ends of macromolecules is a major focus of polymer research. Most common living polymerization techniques offer specific methods of end-functionalization governed by the active propagating species and the kinetics of the polymerization reaction. Ring-opening metathesis polymerization has established itself as one of the most functional-group-tolerant living polymerization techniques known, but this tolerance has limited the number of available functionalization reactions. Metathesis chemists have therefore been required to develop a variety of end-functionalizations, adapting each of them to the reactivity scheme of the particular catalysts used and the complexity of the group to be attached. This review presents an overview of the methods developed for different types and generations of metathesis catalysts that are typically used in such polymerizations. We also present a 'field guide' of functionalization methods highlighting the factors to be considered when choosing the most appropriate approach.
183 citations