Epoxy-based hybrids using TiO2 nanoparticles prepared via a non-hydrolytic sol-gel route

Manabu Kobayashi, Hitomi Saito, Bruno Boury, Kimihiro Matsukawa, Yoshiyuki Sugahara*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)


TiO2 nanoparticles with an average diameter of less than 10 nm were prepared via a non-hydrolytic sol-gel route in a TiCl4- diisopropyl ether-CH2Cl2 system. After modification with n-octylphosphonic acid (OPA) to increase their organophilic character, the TiO2 nanoparticles were used for preparation of TiO2/epoxy hybrid films. Characterization by FT-IR, solid-state 13C cross-polarization/magic angle spinning (CP/MAS) and 31P MAS NMR techniques showed the preservation of the n-octyl groups and the presence of TiOP bonds on the surface of TiO 2 nanoparticles. Hybrid films with various TiO2 contents were prepared via a wet process and casting using CH2Cl2 as a solvent. The resulting films were highly transparent. The refractive indices of TiO2/epoxy hybrid films at 633 nm increased monotonously from 1.51 for the pure polymer to 1.66 for the hybrid containing 62.4 mass% of TiO2 nanoparticles.

Original languageEnglish
Pages (from-to)673-677
Number of pages5
JournalApplied Organometallic Chemistry
Issue number11
Publication statusPublished - 2013 Nov


  • epoxy resin
  • organic-inorganic hybrid
  • surface modification
  • titania

ASJC Scopus subject areas

  • General Chemistry
  • Inorganic Chemistry


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