二層カーボンナノチューブ内層における光学特性

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  • Optical studies of inner tubes within double-walled carbon nanotubes
  • 2ソウ カーボンナノチューブ ナイソウ ニ オケル コウガク トクセイ

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We examined the optical features of double-walled carbon nanotubes (DWNTs). It is found that the semiconducting inner tubes within DWNTs show bright and stable photoluminescence that cannot be found in single-walled carbon nanotubues (SWNTs) having same chirality (n, m), even though both samples were prepared in the same condition. In another finding, optical absorption and photoluminescence signal were observed for the inner tubes within the fluorinated DWNTs as well as CdSe quantum dot-decorated fluorinated DWNTs. Fluorine atoms on the outer tubes of DWNTs are also effective for nucleating and growing CdSe nanoparticles. These optical activities of inner tubes of DWNTs show the shielding effect of the outer tubes. We believe that present finding of intrinsic optical abilities of carbon nanotubes can contribute to improvement of biomedical and optoelectrical applications.

収録刊行物

  • 炭素

    炭素 2009 (239), 172-179, 2009

    炭素材料学会

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