Synthesis and Characterization of Poly(arylene ether oxadiazole) Telechelics

Dominique Gomes, Suzana Nunes*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

Poly(arylene ether oxadiazole) telechelics with fluorine and hydroxyl end groups were synthesized by nucleophilic substitution polymerizations of 2,5-bis(4-fluorophenyl)-1,3,4-oxadiazole monomer with bishydroxy compounds containing -C(CH3)2, -C(CF3)2 and -SO2- groups. Fluorotelechelics were obtained with about 3 repeating units (molecular weight about 2000 g·mol-1) using a rather excess (100 mol-%) of bis(fluorophenyl) oxadiazole compound. On the other hand, hydroxytelechelics were synthesized with about 9 repeating units (molecular weight about 5000 g · mol-1) using a small excess of bishydroxy compound (monomer molar ratio of 0.93). Sulfonated poly(arylene ether oxadiazole) hydroxytelechelics were also synthesized using sulfonated and unsulfonated bishydroxy compounds. All sulfonated hydroxytelechelics were partially water soluble, even when only 40 mol-% of sulfonated monomers was used. The number of repeating units of hydroxytelechelics increased up to 12 (molecular weight about 9000 g·mol-1) using sulfonated monomers, probably because of the higher reactivity of sulfonated phenoxide. The molecular weights estimated by 1H NMR were in agreement to the results obtained by SEC. The telechelics can be used as precursor for the synthesis of block copolymer.

Original languageEnglish (US)
Pages (from-to)2130-2141
Number of pages12
JournalMacromolecular Chemistry and Physics
Volume204
Issue number17
DOIs
StatePublished - Nov 12 2003

Keywords

  • Heteroatom-containing polymers
  • Poly(arylene ether oxadiazole)
  • Sulfonated monomers
  • Synthesis
  • Telechelics

ASJC Scopus subject areas

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

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