Control of the Near Infrared Photoluminescence of Locally Functionalized Single-Walled Carbon Nanotubes via Doping by Azacrown-Ether Modification

Hisashi Onitsuka, Tsuyohiko Fujigaya, Naotoshi Nakashima, Tomohiro Shiraki

    研究成果: ジャーナルへの寄稿学術誌査読

    16 被引用数 (Scopus)

    抄録

    Doped semiconducting single-walled carbon nanotubes (SWNTs) through local chemical functionalization (lf-SWNTs) show fascinating photoluminescence (PL) that appears with a longer wavelength and enhanced quantum yield compared to the original PL of non-modified SWNTs. In this study, we introduce an azacrown ether moiety at the doped sites of lf-SWNTs (CR-lf-SWNTs), and observe selective PL wavelength shifts depending on different interaction modes of silver ion inclusion and protonation of the amino group in the ring. Interestingly, their different values of the wavelength shifts show a clear correlation with calculated electron density of the nitrogen atom in the azacrown moiety in case of the inclusion form and the protonated form. This newly-observed responsiveness based on molecular interactions is expected to create doped sites that can versatilely control the PL functions based on molecular systems.

    本文言語英語
    ページ(範囲)9393-9398
    ページ数6
    ジャーナルChemistry - A European Journal
    24
    37
    DOI
    出版ステータス出版済み - 7月 2 2018

    !!!All Science Journal Classification (ASJC) codes

    • 触媒
    • 有機化学

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