An anhydrous proton conductor based on lactam-lactim tautomerism of uracil

Masanori Yamada, Itaru Honma

Research output: Contribution to journalArticlepeer-review

40 Citations (Scopus)


Proton-conducting composite salts were obtained by doping uracil (U) with monodecyl phosphate (MDP). The proton-transfer reaction of the composite salt involves the lactam form of U at low MDP doping ratios, and the lactim form at high ratios (see picture). A proton conductivity of 6 × 10-4 S cm-1 was achieved at 160°C under anhydrous conditions, and the material is thus of interest for applications in polymer electrolyte membrane fuel cells.

Original languageEnglish
Pages (from-to)724-728
Number of pages5
Issue number5
Publication statusPublished - 2004 May 17
Externally publishedYes


  • Conducting materials
  • Materials science
  • Nucleobases
  • Proton transport
  • Tautomerism

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Physical and Theoretical Chemistry


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