Bis(crown ethers) derived from biphenyl: Extraction and electrochemical properties

Ana M. Costero, Joaquin Sanchis, Sergio Peransi, Salvador Gil, Vicente Sanz, Antonio Domenech

Research output: Contribution to journalArticleResearchpeer-review

22 Citations (Scopus)


Ligands derived from 4,4′-dinitrobiphenyl containing azacrown cavities in the 2,2′ position have been used in extraction and transport experiments. Control experiments with a system containing only one complexing cavity have demonstrated that the capability of forming a sandwich-type complex in the aforementioned ligand not only increases extraction but also the transport across a liquid membrane. Extraction studies have also shown that the complex present in the membrane has a 1:1 stoichiometry with regard to both ligands. Electrochemical studies have also been carried out. The ligand containing two complexing cavities is capable of giving rise to a 2:1 complex under electrochemical conditions.

Original languageEnglish
Pages (from-to)4683-4691
Number of pages9
Issue number21
Publication statusPublished - 17 May 2004
Externally publishedYes


  • Azacrown ligands
  • Complexation
  • Electrochemistry
  • Extraction
  • Transport

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