Fabrication of segmented cavity films and their application to nanocomposite materials

Hirohmi Watanabe, Toyoki Kunitake

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


The fabrication of a novel organic-inorganic nanocomposite film in which functional molecules are incorporated with 2-dimensional (2-D) selectivity is described. The 2-D selectivity is attained by photofabrication of segmented nanocavities which can accommodate organic molecules. A composite thin film of 4-azidobenzoic acid (ABA) and titania (TiO2) was obtained by the surface sol-gel process of their mixed precursors. UV irradiation of the ABA/TiO2 film caused decomposition (N2 gas evolution) of the azide group of ABA, and nanocavities were created within the matrix. The nanocavity can accommodate ABA and sulforhodamine B molecules. 2-D sequential incorporation of these molecules into different film segments was made possible by formation of segmented nanocavities via photodecomposition of ABA through a photomask. The current approach allows incorporation of varied functional molecules into segmented nanocavities. Designed 2-D arrangement of the nanocavity within thin film matrixes would find many novel applications.

Original languageEnglish
Pages (from-to)3600-3605
Number of pages6
JournalChemistry of Materials
Issue number14
Publication statusPublished - Jul 12 2005
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • General Chemical Engineering
  • Materials Chemistry


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