Spectral dependence of gold nanorods on the optical properties of substrates and adsorption of polypeptides

Yasuro Niidome, Yuki Nakamura, Kanako Honda, Naotoshi Nakashima

    研究成果: Contribution to journalArticle査読

    4 被引用数 (Scopus)

    抄録

    Gold nanorods (NRs) wrapped with poly(styrene sulfonate) were fixed on glass or indium tin oxide (ITO) substrates that had been modified with polycationic polymer or 3-aminopropyltrimethoxysilane layers. The spectral properties of the NRs were affected by the refractive indices of the substrates and their surface conditions. Surface modification with poly(styrene sulfonate) and avidin molecules shifted the longitudinal surface plasmon (SP) bands to longer wavelength when the substrates were placed in air. In water and a buffered solution, red shifts of the SP bands were also observed, but the shift shifts were not as large as that in the air. It was found that refractive indices around the polymer-wrapped NRs were sensitive to the adsorption of organic molecules even in the aqueous media.

    本文言語英語
    ページ(範囲)204-208
    ページ数5
    ジャーナルJournal of Photochemistry and Photobiology A: Chemistry
    221
    2-3
    DOI
    出版ステータス出版済み - 6 25 2011

    All Science Journal Classification (ASJC) codes

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

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