Exfoliation and film preparation of a layered titanate, Na 2Ti3O7, and intercalation of pseudoisocyanine dye

Nobuyoshi Miyamoto, Kazuyuki Kuroda, Makoto Ogawa

Research output: Contribution to journalArticle

79 Citations (Scopus)

Abstract

Fine powders of propylammonium-exchanged Na2Ti3O 7 were successfully converted to transparent thin films by swelling (and exfoliating) the material in water and subsequent casting and drying the obtained titanate sol on a substrate. The dispersion of the material was promoted by sonication and hydrothermal treatment of the sol. A self-standing film was also obtained by depositing the sol on a Teflon substrate and subsequent peeling off from the substrate by soaking in acetone. Taking advantage of the cation exchange capability of the films thus obtained, a cationic cyanine dye (pseudoisocyanine) was intercalated with retaintion of the transparency and morphology of the films. Polarized visible spectra revealed that the intercalated dyes were present as J-aggregates with the dipole moment oriented parallel to the film surface. The present methodology is a convenient way to fabricate titanate-dye hybrids as films.

Original languageEnglish
Pages (from-to)165-170
Number of pages6
JournalJournal of Materials Chemistry
Volume14
Issue number2
DOIs
Publication statusPublished - 2004 Jan 21

    Fingerprint

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Chemistry

Cite this