EPR monitoring of sol-gel processes - Code: CP7

A. Shames, O. Lev, Y. Berkovich, B. Iosefzon-Kuyavskaya

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


Electron Paramagnetic Resonance (EPR) spectra of paramagnetic probes (free radical, 4-oxo-Tempo for non-doped glasses and vanadyl sulfate for doped silica glass) provide a non-intrusive means of monitoring of the dynamics of the sol-gel process. The free radical spectra parameters (rotation correlation time, isotropic hyperfine interaction parameter and line width) reflect changes in viscosity and polarity in the vicinity of the spin label. The EPR spectra of vanadyl can be used for monitoring the sol-gel process in that different types of mixed vanadyl complexes are formed during glass molding.

Original languageEnglish
Pages (from-to)255-258
Number of pages4
JournalJournal of Sol-Gel Science and Technology
Issue number1-3
StatePublished - 1 Jan 1994


  • EPR
  • Tempo
  • monitoring
  • spin label

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • General Chemistry
  • Biomaterials
  • Condensed Matter Physics
  • Materials Chemistry


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