Synthesis and electrical response of single-ion conducting network polymers based on sodium poly(tetraalkoxyaluminates)

Kate E. Doan, Mark A Ratner, D. F. Shriver

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Abstract

Sodium ion conducting polyelectrolytes containing a network of tetraalkoxyaluminates linked by polyethers have been prepared by the reaction of NaAlH2(OCH2CH2OCH3)2 with low molecular weight poly(ethylene glycols) (PEG(300), -(400), -(600), -(1000)). The conductivities of these electrolytes are comparable to those observed for complexes of sodium tetraalkoxyaluminate salts with poly(ethylene oxide)-based host polymers (ca. 10-6 S cm-1 at 60°C) indicating strong Na+-alkoxyaluminate ion pairing. A conductivity enhancement of 110-fold at 40°C is observed when the cation complexing agent cryptand [2.2.2] is added to the polyelectrolyte prepared from PEG(400). A similar conductivity enhancement was observed (140-fold at 40°C) when cryptand is added to salt complexes; the conductivity enhancement is likely due to a decrease in ion pairing in the electrolytes.

Original languageEnglish
Pages (from-to)418-423
Number of pages6
JournalChemistry of Materials
Volume3
Issue number3
Publication statusPublished - 1991

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ASJC Scopus subject areas

  • Materials Chemistry
  • Materials Science(all)

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