Block copolymers by the conversion of living lithium initiated anionic polymerization into living ruthenium ROMP

Castle, T.C.; Khosravi, E.; Hutchings, L.R.

doi:10.1021/ma060769h

Block copolymers by the conversion of living lithium initiated anionic polymerization into living ruthenium ROMP

Castle, T.C.; Khosravi, E.; Hutchings, L.R.

Authors

T.C. Castle

E. Khosravi

Lian Hutchings l.r.hutchings@durham.ac.uk
Academic Visitor

Abstract

This paper describes a method for the synthesis of well-defined AB block copolymers, where one block is synthesized via anionic polymerization initiated with alkyllithium compounds, and one by ring opening metathesis polymerization (ROMP) using well-defined ruthenium macroinitiators. This methodology was demonstrated by copolymerizing styrene with norbornene derivatives. Polystyrene was synthesized via living anionic polymerization initiated by sec-butyllithium, and functionalized to form macromonomers. These were used as precursors to well-defined ruthenium macroinitiators, the macromonomers being converted by an alkylidene exchange reaction with ruthenium propylidene initiator RuCl2(CHEt)(PCy3)2. These macroinitiators were used to initiate the ROMP of various norbornene derivatives in order to synthesize well-defined block copolymers with narrow molecular weight distributions.

Citation

Castle, T., Khosravi, E., & Hutchings, L. (2006). Block copolymers by the conversion of living lithium initiated anionic polymerization into living ruthenium ROMP. Macromolecules, 39(17), 5639-5645. https://doi.org/10.1021/ma060769h

Journal Article Type	Article
Publication Date	Aug 22, 2006
Deposit Date	Mar 20, 2015
Publicly Available Date	Mar 20, 2015
Journal	Macromolecules
Print ISSN	0024-9297
Electronic ISSN	1520-5835
Publisher	American Chemical Society
Peer Reviewed	Peer Reviewed
Volume	39
Issue	17
Pages	5639-5645
DOI	https://doi.org/10.1021/ma060769h

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Copyright Statement
This document is the Accepted Manuscript version of a Published Work that appeared in final form in Macromolecules, copyright © 2006 American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://dx.doi.org/10.1021/ma060769h.