Complex-plane impedance study on a hydrogen-doped copper coordination polymer: N,N′-bis-(2-hydroxyethyl)dithiooxamidato-copper(II)

Yuki Nagao, Ryuichi Ikeda, Seiichi Kanda, Yoshihiro Kubozono, Hiroshi Kitagawa

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)


AC conductivity measurements with an impedance analyzer were carried out for a hydrogen-doped coordination polymer, N,N'-bis-(2-hydroxyethyl) dithiooxamidatocopper(II), in order to estimate the protonic conductivity (σp). The log σp was linearly increased from 2.6 χ 10-9 to 2.2 χ 10-6 S cm-1 with relative humidity (RH) from 45 to 100 % at 300 K. A slight hysteresis of protonic conductivity was observed upon increasing and decreasing RH, which implies that H3O+ is generated by a reaction between water molecule and acid-base polymer near RH - 100%.

Original languageEnglish
Pages (from-to)89-94
Number of pages6
JournalMolecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals
Publication statusPublished - 2002
Externally publishedYes


  • Ac conductivity measurement
  • Coordination polymer
  • Electronic conduction
  • Hydrogen doping
  • Inorganic-organic hybrids
  • Protonic conduction

ASJC Scopus subject areas

  • Condensed Matter Physics


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