Controlled copolymerization by metal complexes [12] controlled molecular weights alternating copolymers of carbon dioxide and epoxide by zinc complex of N-substituted porphyrin

Hitomi Yamazaki, Hiroshi Sugimoto

Research output: Contribution to conferencePaper


We have investigated the copolymerization of carbon dioxide and epoxide. In this paper, we wish to report that zinc N-methylated tetraphenylporphyrin catalyzed the alternating copolymerization of carbon dioxide and cyclohexene oxide. When zinc N-methylated tetraphenylporphyrin and cyclohexene oxide (500 equiv. with respect to the zn complex) in THF were heated (80°C, 3 days) under 50 atm of carbon dioxide with stirring in a autoclave, an alternating copolymer with average molecular weight of 60,000 was obtained in 98%. Moreover althernaiting copolymers with desired molecular weights were synthesized by changing the initial molar ration of cyclohexene oxide to the catalyst.

Original languageEnglish
Number of pages1
Publication statusPublished - 18 Oct 2006
Event55th SPSJ Annual Meeting - Nagoya, Japan
Duration: 24 May 200626 May 2006


Conference55th SPSJ Annual Meeting



  • Carbon Dioxide
  • Copolymerization
  • Epoxide
  • Polycarbonate
  • Zinc-Porphyrin

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