Morphological effects on the third-order nonlinear optical response of polydiacetylene nanofibers

Haruki Maki, Rie Chiba, Tsunenobu Onodera, Hitoshi Kasai, Rodrigo Sato, Yoshihiko Takeda, Hidetoshi Oikawa

    Research output: Contribution to journalArticlepeer-review

    3 Citations (Scopus)

    Abstract

    The third-order nonlinear optical (NLO) susceptibility for morphologically controlled polydiacetylene (PDA) nanocrystals (NCs) and PDA nanofibers (NFs) have been determined for the first time by the experimental combination of transient pump-probe spectroscopy and spectroscopic ellipsometry. The figure of the merit of PDA NFs was much superior to PDA NCs and/or PDA bulk crystals, and the excitonic relaxation time was of order of sub-pico second. Namely, this is the first case to reveal the morphological effect on NLO response. PDA NFs having the long effective π-conjugation length are one of the most promising organic third-order NLO nanomaterials toward the photonic device application.

    Original languageEnglish
    Pages (from-to)1087-1092
    Number of pages6
    JournalMRS Communications
    Volume9
    Issue number3
    DOIs
    Publication statusPublished - 2019 Sep 1

    ASJC Scopus subject areas

    • Materials Science(all)

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