Single Chirality Extraction of Single-Wall Carbon Nanotubes for the Encapsulation of Organic Molecules

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• 作者：Masatoshi Kawai ; Haruka Kyakuno ; Takuya Suzuki ; Toru Igarashi ; Hironori Suzuki ; Toshiya Okazaki ; Hiromichi Kataura ; Yutaka Maniwa ; Kazuhiro Yanagi
• 刊名：The Journal of the American Chemical Society
• 出版年：2012
• 出版时间：June 13, 2012
• 年：2012
• 卷：134
• 期：23
• 页码：9545-9548
• 全文大小：270K
• 年卷期：v.134,no.23(June 13, 2012)
• ISSN：1520-5126

文摘

The hollow inner spaces of single-wall carbon nanotubes (SWCNTs) can confine various types of molecules. Many remarkable phenomena have been observed inside SWCNTs while encapsulating organic molecules (peapods). However, a mixed electronic structure state of the surrounding SWCNTs has impeded a detailed understanding of the physical/chemical properties of peapods and their device applications. We present a single-chirality purification method for SWCNTs that can encapsulate organic molecules. A single-chiral state of (11,10) SWCNTs with a diameter of 1.44 nm, which is large enough for molecular encapsulation, was obtained after a two-step purification method: metal-semiconductor sorting and cesium-chloride sorting. The encapsulation of C₆₀ to the (11,10) SWCNTs was also succeeded, promising a route toward single-chirality peapod devices.