Preparation and luminescence properties of organic phosphorescent nanoparticles

Yousuke Miyashita, Shinichi Horino, Hitoshi Kasai, Hidetoshi Oikawa, Hachiro Nakanishi

    Research output: Contribution to journalArticlepeer-review

    3 Citations (Scopus)


    Organic phosphorescent nanoparticles, which have a host-guest-type structure and show photosensitized phosphorescence, were successfully prepared by a reprecipitation method. Concentration quenching, which is disadvantage for organic nanophosphors, was efficiently suppressed with a host-guest-type structure widely used in organic light-emitting diodes. The study of luminescence properties revealed that the host material acts as a photosensitizer leading to the phosphorescence of the guest materials. Depending on the guest material, organic phosphorescent nanoparticles showed emission spectra of blue, green, and red. By adjusting the mixing ratio of phosphorescent nanoparticle dispersion liquids, the emission spectrum was tunable and white luminescence was observed.

    Original languageEnglish
    Article number025002
    JournalJapanese journal of applied physics
    Issue number2 PART 1
    Publication statusPublished - 2012 Feb

    ASJC Scopus subject areas

    • Engineering(all)
    • Physics and Astronomy(all)


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