Low-temperature preparations of unimolecular nitroxide initiators for "living" free radical polymerizations

Rebecca Braslau, Leland C. Burrill, Michael Siano, Neeta Naik, Rodney K. Howden, Lara K. Mahal

Research output: Contribution to journalArticle

Abstract

Low-temperature methods for the preparation of monomeric initiators for use in "living" free radical olefin polymerizations have been developed. Oxidative methods for generating carbon radicals in the presence of nitroxide traps such as TEMPO utilize PbO2 with benzylic, alkyl, or phenylhydrazines or CuCl2 with lithium enolates. Photolytic methods employ [Cp(CO)2Fe]2 with a benzylic bromide, diphenyl disulfide with styrene, or di-tert-butyl peroxide with ethers. The use of di-tert-butyl hyponitrite with ethers generates carbon radicals at 50 °C that are trapped by TEMPO.

Original languageEnglish (US)
Pages (from-to)6445-6450
Number of pages6
JournalMacromolecules
Volume30
Issue number21
DOIs
StatePublished - Oct 20 1997

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry

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    Braslau, R., Burrill, L. C., Siano, M., Naik, N., Howden, R. K., & Mahal, L. K. (1997). Low-temperature preparations of unimolecular nitroxide initiators for "living" free radical polymerizations. Macromolecules, 30(21), 6445-6450. https://doi.org/10.1021/ma970822p