Oxovanadium-catalyzed oxidative polymerization of diphenyl disulfides with oxygen

Kimihisa Yamamoto, Eishun Tsuchida, Hiroyuki Nishide, Mitsutoshi Jikei, Kenichi Oyaizu

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Abstract

Oligo(p-phenylene sulfide) is synthesized through oxygen oxidative polymerization of diphenyl disulfide catalyzed by vanadyl acetylacetonate. The mechanistic studies reveal that two redox cycles V(III)/V(IV) and V(IV)/V(V) give rise to catalysis through a 2-electron transfer between diphenyl disulfide and molecular oxygen. The VO catalysts act as an excellent electron mediator to bridge a 1.0-V potential gap between the oxidation potential of disulfides and the reduction potential of oxygen. The VO-catalyzed oxygen oxidative polymerization provides pure oligo(p-phenylene sulfide)s containing an S-S bond. The polymeric product is of low molecular weight due to insolubility of poly(p-phenylene sulfide) under these experimental conditions.

Original languageEnglish
Pages (from-to)3432-3437
Number of pages6
JournalMacromolecules
Volume26
Issue number13
Publication statusPublished - 1993 Jan 1

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ASJC Scopus subject areas

  • Materials Chemistry

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