Electron exchange columns through entrapment of a nickel cyclam in a sol-gel matrix

Yair Lavi, Ariela Burg, Eric Maimon, Dan Meyerstein

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


An electron exchange column (analogous to ion exchange columns) was developed using the unique redox properties of the nickel-tetraazamacrocyclic complexes (nickel cyclam [Ni IIL 1] 2+) and nickel-trans-III-meso-5,7,7,12,14,14-hexamethyl-1,4,8,11- tetraazacyclotetradecane, ([Ni IIL 2] 2+), and the physical and chemical stability of the ceramic materials using the sol-gel process to entrap the complexes. The entrapment by the biphasic sol-gel method is based on non-covalent bonds between the matrix and the complex; therefore the main problem was leaching. Parameters controlling the leaching were investigated. Redox cycles with the reducing agent ascorbic acid, and persulfate as the oxidizing agent were performed.

Original languageEnglish
Pages (from-to)5188-5192
Number of pages5
JournalChemistry - A European Journal
Issue number18
StatePublished - 26 Apr 2011


  • N ligands
  • electron exchange column
  • macrocyclic ligands
  • nickel
  • redox reactions
  • sol-gel processes

ASJC Scopus subject areas

  • Catalysis
  • General Chemistry
  • Organic Chemistry


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