Precise architecture of 1:1 alternating copolymers between germylenes and p‐benzoquinone derivatives: First clear‐ cut evidence of biradical mechanism in polymerization chemistry

Shiro Kobayashi, Satoru Iwata, Shin‐Ichiro ‐I Shoda

Research output: Contribution to journalArticle

Abstract

Germylenes bearing a bulky amide substituent have been copolymerized with various p‐benzoquinone derivatives without any added catalyst to give novel class of germanium‐containing polymers having a tetravalent germanium unit and a p‐hydroquinone unit alternatingly in the main chain (“oxidation‐reduction alternating copolymerization”). The resulting copolymers have high molecular weight (Mw>5.5×104) and are soluble in common organic solvents. A novel biradical mechanism involving a germyl radical and a semiquinone radical is proposed on the basis of ESR analysis of the propagating polymer end as well as trapping experiments using a disulfide or TEMPO radical.

Original languageEnglish
Pages (from-to)229-235
Number of pages7
JournalMacromolecular Symposia
Volume77
Issue number1
DOIs
Publication statusPublished - 1994 Jan

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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