Accession Number : ADP008253

Title :   Preparation and Properties of Sol-Gel Thin Films with Porphins,

Corporate Author : TOKYO UNIV (JAPAN)

Personal Author(s) : Inoue, Hiroyuki ; Iwamoto, Takashi ; Makishima, Akio ; Ikemoto, Makoto ; Horie, Kazuyuki

Report Date : 22 MAY 1992

Pagination or Media Count : 4

Abstract : Recently the sol-gel process for preparing amorphous materials has been studied. The low processing temperatures enable us to dope the gel with functional organic molecules. Such molecules have poor thermal stability and cannot be included in traditional oxide glasses. Avnir et al. have been reported the preparation and optical properties of amorphous silica doped with rhodamine 6G and pyrene. Makishima and Tani have doped one with 1,4dihydr-oxy-9,10-anthraquinone (DAQ) and showed photochemical hole burning (PHB) at 4.8 K. They have also demonstrated that other organic molecules can be successfully incorporated into sol-gel matrices. The number of potential applications of such materials is expected to be substantial. Although materials have been synthesized, little is known about the structure of sol-gel matrix and the interaction between the molecule and the matrix. PHB has attracted considerable interest as a tool for high-resolution solid state spectroscopy. The sol-gel thin film is expected to possess several advantages over gel bulks. Several studies suggest the differences of the structure and properties between bulks and thin films. However, due to the thickness, there have been rather few investigations attempting to obtain structural information directly. Recently the use of organic molecule appears to be one approach for supplying new insights regarding the chemistry of sol-gel materials. In this point of view PHB is expected to be high potential. We report here the preparation of sol-gel thin films doped with the porphine derivative and its application to PHB.

Descriptors :   *THIN FILMS, *MOLECULAR SPECTROSCOPY, *MOLECULAR STRUCTURE, AMORPHOUS MATERIALS, ANTHRAQUINONES, CHEMISTRY, GELS, HIGH RESOLUTION, INTERACTIONS, MOLECULES, OPTICAL PROPERTIES, OXIDES, PROCESSING, RESOLUTION, SOLIDS, SPECTROSCOPY, TEMPERATURE, THERMAL STABILITY, THICKNESS, DOPING, GLASS, ABSORPTION SPECTRA.

Subject Categories : Solid State Physics
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE