Immobilization of photosynthetic pigments into silica-surfactant nanocomposite films

Hideo Hata, Tatsuo Kimura, Makoto Ogawa, Yoshiyuki Sugahara, Kazuyuki Kuroda

Research output: Contribution to journalConference articlepeer-review

15 Citations (Scopus)


Highly transparent silica-surfactant nanocomposite films containing photosynthetic pigments have been successfully formed through the solubilization of chlorophyll a (Chl a) into surfactant micelles. The UV-vis absorption spectra indicated that a large amount of Chl a were transformed into pheophytin a in the films. These photosynthetic pigments were well dispersed in the surfactant assemblies and their chlorin rings were exposed to the surface of silica layers. Even under an air atmosphere, the photostability of immobilized pigments was largely improved in comparison with that in a homogeneous Chl a solution. Because both Chl a and pheophytin a molecules are effective for the photosensitive charge separation, the present film system is very suitable for heterogeneous immobilizing media for photosynthetic pigments from the viewpoint of in vitro biomimetic devices for solar energy conversion.

Original languageEnglish
Pages (from-to)543-547
Number of pages5
JournalJournal of Sol-Gel Science and Technology
Issue number1-3
Publication statusPublished - 2000 Dec
Event10th International Workshop pn Glass and Ceramics, Hybrids and Nanocomposites from Gels - Yokohama, Jpn
Duration: 1999 Sept 201999 Sept 24

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Chemistry(all)
  • Biomaterials
  • Condensed Matter Physics
  • Materials Chemistry


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