Synthesis of acyclic polyethers bearing thioamide end-groups and selective sensing of silver ion

Jong Seung Kim, Ill Yong Yu, Jin Hyun Pang, Moon Hwan Cho, Jae Hoon Cho, Dong Won Kim, Jae Hyung Yoo, Seon Gil Kwon

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A series of acyclic polyethers bearing thioamide end-groups and lipophilic alkyl chains were successfully synthesized with moderate yields. Transport measurements in a bulk liquid membrane (BLM) system indicated a very high selectivity of silver ion over other metal cations. Thermodynamic parameters (ΔH, TΔS, and log K) for ligand-metal ion complexations were determined by solution calorimetric titration in methanol at 25 °C. The complexations were enthalpy driven and silver ion exhibited a high selectivity over other metal ions due to the increase of covalent binding between the soft acid (Ag+) and soft base (sulfur).

Original languageEnglish
Pages (from-to)321-330
Number of pages10
JournalJournal of Inclusion Phenomena
Issue number3
Publication statusPublished - 1999 Jul
Externally publishedYes



  • Complexation
  • Ion selectivity
  • Polyether
  • Thermodynamic parameter
  • Thioamides
  • Transport

ASJC Scopus subject areas

  • Food Science
  • Chemistry(all)
  • Condensed Matter Physics

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