Electron transfer reactions of radical anions with TEMPO: A versatile route for transformation of living anionic polymerization into stable radical-mediated polymerization

Cianga I., SENYO T., ITO K., Yagci Y.

MACROMOLECULAR RAPID COMMUNICATIONS, vol.25, no.19, pp.1697-1702, 2004 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 25 Issue: 19
  • Publication Date: 2004
  • Doi Number: 10.1002/marc.200400319
  • Journal Name: MACROMOLECULAR RAPID COMMUNICATIONS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1697-1702
  • Istanbul Technical University Affiliated: Yes

Abstract

The possibility of transforming a living anionic polymerization into a stable radical-mediated radical polymerization (SFRP) was demonstrated. For this purpose, 2,2,6,6-tetramethylpiperidine-N-oxyI (TEMPO) alcoholate, formed by a one-electron redox reaction between potassium naphthalene and TEMPO, was used to initiate the living anionic polymerization of ethylene oxide (EO). Poly(ethylene oxide) obtained in this way possessed TEMPO terminal units and was subsequently used as an initiator for the SFRP of styrene to give block copolymers.