Unique luminescence properties of rare earth ion-doped polyimide nanoparticles and their mechanism

Takayuki Ishizaka, Hitoshi Kasai, Hachiro Nakanishi

    Research output: Contribution to conferencePaperpeer-review

    Abstract

    We prepared the rare earth ion (Eu3+, Tb3+)-doped polyimide nanoparticles by reprecipitation method. The nanoparticles showed unique luminescence properties. It was observed that luminescence intensity assigned to rare earth ion increased with increase in UV-irradiation time. In contrast, the intensity decreased with elevation of heat-treatment temperature and the luminescence vanished after treatment at 200°C. Broad bands ascribed to a host were observed and these intensities were also varied by UV-irradiation and heat-treatment. The excitation spectra indicated that energy transfer from PI to rare earth ion occurred. The above phenomena are explained that a reversible change in the intensity of luminescence ascribed to a host results in that assigned to rare earth ion through energy transfer.

    Original languageEnglish
    Number of pages1
    Publication statusPublished - 2005 Dec 1
    Event54th SPSJ Annual Meeting 2005 - Yokohama, Japan
    Duration: 2005 May 252005 May 27

    Other

    Other54th SPSJ Annual Meeting 2005
    Country/TerritoryJapan
    CityYokohama
    Period05/5/2505/5/27

    Keywords

    • Luminescence
    • Nanoparticle
    • Polyimide
    • Rare earth ion
    • Recording material

    ASJC Scopus subject areas

    • Engineering(all)

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