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Published October 24, 2007 | Supplemental Material
Journal Article Open

Hyperbranched Macromolecules via Olefin Metathesis


A facile route to hyperbranched polymers via acyclic diene metathesis is reported. Any molecule functionalized with two or more acrylate groups and one terminal olefin can serve as an AB_n monomer when exposed to an imidazolinylidene-based ruthenium olefin metathesis catalyst, due to the cross metathesis selectivity of this catalyst. For the polymers obtained by this method, both ^1H NMR spectroscopy and triple detector size exclusion chromatography conclusively indicate a branched architecture.

Additional Information

© 2007 American Chemical Society. Received August 6, 2007. Publication Date (Web): September 29, 2007. We gratefully acknowledge Materia, Inc. for the generous gift of catalyst 1. We also thank Wyatt Technology Corp., especially Dr. Michelle Chen and Dr. Jeffrey Ahlgren for help with the SEC analysis and instrumentation. This research was supported by the office of Naval Research (ONR) through the Multidisciplinary University Research Initiative (MURI) program and NSF.

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