Fabrication of organic microcrystals and their optical properties

H. Oikawa, H. Kasai, H. Nakanishi

    Research output: Contribution to journalArticlepeer-review

    7 Citations (Scopus)

    Abstract

    Organic microcrystals occupy the mesoscopic phase between a single molecule and bulk crystal, and they are expected to exhibit peculiar optical- and electronic-properties, depending on crystal size. The reprecipitation method was available for fabrication of organic microcrystals. The crystal size was in the range of about ten nanometer to several hundred nanometer. The excitonic absorption peak positions were shifted to short-wavelength region with decreasing crystal size. This phenomenon is not explainable by quantum confinement effect, and it is now speculated to be due to a certain coupled interaction between exciton and lattice vibration in thermally softened microcrystal lattice.

    Original languageEnglish
    Pages (from-to)158-168
    Number of pages11
    JournalACS Symposium Series
    Volume798
    DOIs
    Publication statusPublished - 2001

    ASJC Scopus subject areas

    • Chemistry(all)
    • Chemical Engineering(all)

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