Area-selective surface modification of si substrates with a fluorescent organophosphonic acid using the differences in reactivities of their surface terminal groups

Taro Asami, Naokazu Idota, Yoshiyuki Sugahara

    Research output: Contribution to journalArticle


    Area-selective surface modification of Si substrates bearing OH- and H-terminated areas by fluorescent 1-pyrenylphosphonic acid (PYPA) was achieved using chlorobenzene at 140 °C for 2 h in an autoclave. The OH-terminated area was successfully modified, as shown by X-ray photoemission spectroscopy and contact angle measurement, while no reaction proceeded between PYPA and the H-terminated area. SiO2 nanoparticles were reacted with PYPA under the same conditions to form SiOP bonds, suggesting that dehydration coupling proceeded between the OH-terminated area and PYPA.

    Original languageEnglish
    Pages (from-to)1010-1013
    Number of pages4
    JournalChemistry Letters
    Issue number7
    Publication statusPublished - 2017



    • Area-selective surface modification
    • Fluorescent organophosphoric acid
    • Si substrate

    ASJC Scopus subject areas

    • Chemistry(all)

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