Block copolymers synthesized by ROMP-to-anionic polymerization transformation

Sasha B. Myers, Richard A. Register

Research output: Contribution to journalArticle

24 Scopus citations

Abstract

A two-step site transformation technique is presented to convert from living ring-opening metathesis polymerization (ROMP) to living anionic polymerization of unsaturated monomers. This method permits the synthesis of well-defined diblock copolymers of controllable molecular weight and narrow molecular weight distribution, combining ROMP and anionically polymerizable monomers. The technique employs a functional terminating agent to add a styryl group to the end of the ROMP chain. The end group is then metalated to yield an active site for anionic polymerization, so that the ROMP chain acts as a macroinitiator from which the anionic block is grown. Both polycyclopentene/ polystyrene and polynorbornene/polystyrene diblocks were successfully synthesized, and the method should be applicable to a broad range of monomers.

Original languageEnglish (US)
Pages (from-to)5283-5288
Number of pages6
JournalMacromolecules
Volume41
Issue number14
DOIs
StatePublished - Jul 22 2008

All Science Journal Classification (ASJC) codes

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

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